Editing XSS

= XSS (Xbox System Software) =
== About This Page ==
This page is part of an ongoing effort to '''document and preserve everything related to Xbox Series S development and prototype builds'''.  
Our goal is to '''collect, verify, and archive''' as much information as possible in one central location that anyone can use as a '''reference point'''.  

Each entry indicates whether it is:  
* '''Publicly available''' — confirmed and archived  
* '''Known but not yet available''' — referenced but no files or images found  

If you can help fill in the gaps, please do!  
We offer '''bounties paid in Bits''' for anyone who can provide a '''working Internet Archive link''' to missing materials.  

Together, we can ensure this knowledge remains accessible to everyone interested in '''Xbox development history'''.

----

== Bounty (Short) ==
'''Bounty:''' Bits will be awarded for verified Internet Archive links to undocumented XSS builds, NANDs, or other missing XSS-related materials.  
Links must point to [https://archive.org Internet Archive (archive.org)] and may be '''your own upload or someone else’s'''.  

----

== Disclaimer (Short) ==
'''Disclaimer:''' No content is shared or distributed here — this page only links to material already hosted on the [https://archive.org Internet Archive] for documentation and preservation purposes.


== XSS Overview ==
'''XSS''' (sometimes referred to as '''XBS''') is the operating system used by the Xbox 360 family of consoles and dev/test hardware.  
It evolved from the original Xbox OS, which itself was a heavily customized Windows NT / Windows 2000–derived kernel, and it underpins the dashboard, recovery system, device drivers, and developer tooling for the platform.

Much of the historical structure, build taxonomy, and terminology on this page was adapted from community research published on XenonLibrary’s "XSS" entry, plus contributor notes.  
Used with permission. We’ve rewritten and expanded it for clarity and CNH’s format, and we’ll continue to add links and media as we go.

----

== What This Page Shows ==
This page lists all the recoveries that have been found and preserved over the years.  
Each column in the table is explained below so you know what you’re looking at.

----

== Build Types ==
XSS is the underlying operating system that runs on the Xbox 360.  
There are three common build types:

* '''Checked (Debug)''' — Debug build used for development and testing; contains extra checks and debugging functionality developers need.  
* '''Hybrid''' — A build that mixes Free and Checked attributes; closer to a retail environment but with some debugging functionality.  
* '''Free (Retail)''' — Made to be as close to retail as possible; simulates how software will behave on a retail console.

----

== SDK ==
The '''Software Development Kit (SDK)''' is the software used on your PC.  
It contains the tools needed to communicate with your Xbox 360 and to assist with building and debugging games.

----

== Kernel Version ==
This is the package that would be sent out to developers and includes the SDK, recovery, and ISO containing XSS.  
Each release typically includes bug fixes, new features, and updated functions.

The version number breaks down like this:

* '''Major''' – Kernel generation (on Xbox 360 this is typically 2)  
* '''Minor''' – Usually 0  
* '''Build''' – The build number (e.g., 21256)  
* '''QFE''' – Quick Fix Engineering hotfix iteration (e.g., .8)

'''Example:''' `2.0.21256.8` → Major: 2 / Minor: 0 / Build: 21256 / QFE: .8

----

== Video Walkthrough ==
A simple video demo of XSS running on an Xbox 360 can show the progression between versions.  
Note: apart from dashboard or launcher replacements, differences between successive XSS versions may be minor.

----

== Notes ==
Nothing much to say here for now — additional information will be added as new data becomes available.

----

== ROM / Compatibility ==
This column lists which console revisions and hardware configurations each recovery or build is compatible with.

== Sources & Attribution ==
* XenonLibrary – “[XSS]” (accessed {{CURRENTDAY}} {{CURRENTMONTHNAME}} {{CURRENTYEAR}}). We drew heavily on their public research and listings and will continue to add our own notes, mirrors, and walkthroughs over time. https://xenonlibrary.com/wiki/XSS
* Additional CNH community notes, captures, and teardown data (to be linked per row).



== 2004 Builds ==
{| class="wikitable sortable" style="width:100%;"
! Build Date !! XSS Build !! SDK Build !! Kernel Version !! Video Walkthrough !! Notes !! ROM Compatibility
|-
| Jan 2004 || 0180.0 || 0180.0 || 2.0.0180.0 || Coming Soon || Early Power Mac G5 Alpha bring-up; GPU init & memory validation routines introduced. || xenon-a (G5)
|-
| Jan 2004 || 0189.0 || 0189.0 || 2.0.0189.0 || Coming Soon || Updated SDK tool-chain, compiler optimizations and memory controller tuning. || xenon-a (G5)
|-
| Jan 2004 || 0193.0 || 0193.0 || 2.0.0193.0 || Coming Soon || Fan curve fix, linker default stack size set to 1 MB. || xenon-a (G5)
|-
| Feb 2004 || 0194.0 || 0194.0 || 2.0.0194.0 || Coming Soon || Updated fan driver, improved 480 p signal stability. || xenon-a (G5)
|-
| Feb 2004 || 0195.0 || 0195.0 || 2.0.0195.0 || Coming Soon || Added 480 p support; launcher localization. || xenon-a (G5)
|-
| Feb 2004 || 0196.0 || 0196.0 || 2.0.0196.0 || Coming Soon || Warm-boot GPU hang fix; launcher bitmap change. || xenon-a (G5)
|-
| Feb 2004 || 0197.0 || 0197.0 || 2.0.0197.0 || Coming Soon || New compiler toolset, internal bug fixes. || xenon-a (G5)
|-
| Feb 2004 || 0198.0 || 0198.0 || 2.0.0198.0 || Coming Soon || Internal iteration on 0197; minor bug fixes. || xenon-a (G5)
|-
| Feb 2004 || 0199.0 || 0199.0 || 2.0.0199.0 || Coming Soon || “A5 milestone” merge to main branch; end of initial Alpha stage. || xenon-a (G5)
|-
| Feb 2004 || 0201.0 || 0201.0 || 2.0.0201.0 || Coming Soon || Compiler updates and stability fixes. || xenon-a (G5)
|-
| Feb 2004 || 0202.0 || 0202.0 || 2.0.0202.0 || Coming Soon || New fan driver; memory latency tuning; FPU/VPU corruption fix. || xenon-a (G5)
|-
| Feb 2004 || 0203.0 || 0203.0 || 2.0.0203.0 || Coming Soon || Minor bug fixes. || xenon-a (G5)
|-
| Feb 2004 || 0205.0 || 0205.0 || 2.0.0205.0 || Coming Soon || Bug-fix maintenance build. || xenon-a (G5)
|-
| Feb 2004 || 0208.0 || 0208.0 || 2.0.0208.0 || Coming Soon || Minor fixes and code cleanup. || xenon-a (G5)
|-
| Feb 2004 || 0211.0 || 0211.0 || 2.0.0211.0 || Coming Soon || Fixed launcher artifacting; stability improvements. || xenon-a (G5)
|-
| Mar 2004 || 0311.0 || 0311.0 || 2.0.0311.0 || Coming Soon || Compiler update; system profiler improvements. || xenon-a (G5)
|-
| Mar 2004 || 0313.0 || 0313.0 || 2.0.0313.0 || Coming Soon || Minor fixes. || xenon-a (G5)
|-
| Mar 2004 || 0314.0 || 0314.0 || 2.0.0314.0 || Coming Soon || Fixes crash on shutdown. || xenon-a (G5)
|-
| Mar 2004 || 0316.0 || 0316.0 || 2.0.0316.0 || Coming Soon || Stability patch for Shrek demo titles. || xenon-a (G5)
|-
| Mar 2004 || 0327.0 || 0327.0 || 2.0.0327.0 || Coming Soon || Localization fixes and minimal 720 p support. || xenon-a (G5)
|-
| Mar 2004 || 0329.0 || 0329.0 || 2.0.0329.0 || Coming Soon || Minor bug fixes. || xenon-a (G5)
|-
| Mar 2004 || 0330.0 || 0330.0 || 2.0.0330.0 || Coming Soon || Compiler alignment adjustments. || xenon-a (G5)
|-
| Mar 2004 || 0338.0 || 0338.0 || 2.0.0338.0 || Coming Soon || Internal optimization build. || xenon-a (G5)
|-
| Mar 2004 || 0401.0 || 0401.0 || 2.0.0401.0 || Coming Soon || Texture unit fix; minor bug fixes. || xenon-a (G5)
|-
| Mar 2004 || 0402.0 || 0402.0 || 2.0.0402.0 || Coming Soon || Code cleanup and QA iteration. || xenon-a (G5)
|-
| Apr 2004 || 0419.0 || 0419.0 || 2.0.0419.0 || Coming Soon || Localization update and stability fixes. || xenon-a (G5)
|-
| Apr 2004 || 0420.0 || 0420.0 || 2.0.0420.0 || Coming Soon || XUI interpolation improvements; memory leak fixes. || xenon-a (G5)
|-
| Apr 2004 || 0422.0 || 0422.0 || 2.0.0422.0 || Coming Soon || Compiler update and bug fixes. || xenon-a (G5)
|-
| Apr 2004 || 0424.0 || 0424.0 || 2.0.0424.0 || Coming Soon || XUI and DrawPrimitiveUP fix for Shrek; minor fixes. || xenon-a (G5)
|-
| May 2004 || 0431.0 || 0431.0 || 2.0.0431.0 || Coming Soon || VC++ 2005 (Whidbey) compiler integration; FP model changes. || xenon-a (G5)
|-
| Jun 2004 || 0530.0 || 0530.0 || 2.0.0530.0 || Coming Soon || Main branch external release with bug fixes. || xenon-a (G5)
|-
| Jun 2004 || 0530.1 || 0530.1 || 2.0.0530.0 || Coming Soon || Incremental fix release for 0530. || xenon-a (G5)
|-
| Jun 2004 || 0608.0 || 0608.0 || 2.0.0608.0 || Coming Soon || Minor stability build preceding the 0615 branch. || xenon-a (G5)
|-
| Jun 2004 || 0610.0 || 0610.0 || 2.0.0610.0 || Coming Soon || PIX debugger early integration; new symbol loader. || xenon-a (G5)
|-
| Jun 2004 || 0613.0 || 0613.0 || 2.0.0613.0 || Coming Soon || PIX & XACT 2.0 authoring enabled; optical-drive test hook. || xenon-a (G5)
|-
| Jun 2004 || 0615.0 || 0615.0 || 2.0.0615.0 || Coming Soon || Adds early PIX and XACT 2.0 authoring tools. || xenon-a (G5)
|-
| Jun 2004 || 0620.0 || 0620.0 || 2.0.0620.0 || Coming Soon || PIX stability fixes; bug-tracking sync. || xenon-a (G5)
|-
| Jul 2004 || 0705.0 || 0705.0 || 2.0.0705.0 || Coming Soon || New XUI panel renderer; minor SDK refactor. || xenon-a (G5)
|-
| Jul 2004 || 0707.0 || 0707.0 || 2.0.0707.0 || Coming Soon || Main branch QA iteration. || xenon-a (G5)
|-
| Jul 2004 || 0710.0 || 0710.0 || 2.0.0710.0 || Coming Soon || Compiler and kernel synchronization fixes. || xenon-a (G5)
|-
| Jul 2004 || 0712.0 || 0712.0 || 2.0.0712.0 || Coming Soon || Texture cache debug instrumentation added. || xenon-a (G5)
|-
| Jul 2004 || 0713.0 || 0713.0 || 2.0.0713.0 || Coming Soon || Minor performance optimizations. || xenon-a (G5)
|-
| Jul 2004 || 0720.0 || 0720.0 || 2.0.0720.0 || Coming Soon || Internal/External; adds “Xenon” branding assets. || xenon-a (G5)
|-
| Jul 2004 || 0722.0 || 0722.0 || 2.0.0722.0 || Coming Soon || Early Direct3D debugger integration. || xenon-a (G5)
|-
| Aug 2004 || 0801.0 || 0801.0 || 2.0.0801.0 || Coming Soon || Incremental maintenance release. || xenon-a (G5)
|-
| Aug 2004 || 0810.0 || 0810.0 || 2.0.0810.0 || Coming Soon || Security manager hook initial integration. || xenon-a (G5)
|-
| Aug 2004 || 0812.0 || 0812.0 || 2.0.0812.0 || Coming Soon || Guide prototype build (A/B test). || xenon-a (G5)
|-
| Aug 2004 || 0815.0 || 0815.0 || 2.0.0815.0 || Coming Soon || Guide prototype UX build; early FriendsUI work. || xenon-a (G5)
|-
| Aug 2004 || 0819.0 || 0819.0 || 2.0.0819.0 || Coming Soon || Stability and localization updates. || xenon-a (G5)
|-
| Aug 2004 || 0820.0 || 0820.0 || 2.0.0820.0 || Coming Soon || Studio handoff build for external testing. || xenon-a (G5)
|-
| Aug 2004 || 0824.0 || 0824.0 || 2.0.0824.0 || Coming Soon || Video encoder calibration update. || xenon-a (G5)
|-
| Aug 2004 || 0828.0 || 0828.0 || 2.0.0828.0 || Coming Soon || Sound driver refactor; improved Dolby output. || xenon-a (G5)
|-
| Aug 2004 || 0830.0 || 0830.0 || 2.0.0830.0 || Coming Soon || Main branch external release. || xenon-a (G5)
|-
| Sep 2004 || 0901.0 || 0901.0 || 2.0.0901.0 || Coming Soon || Internal testing branch start for EV1 hardware compatibility. || xenon-a (G5)
|-
| Sep 2004 || 0912.0 || 0912.0 || 2.0.0912.0 || Coming Soon || Studio QA build; GPU clock sync update. || xenon-a (G5)
|-
| Sep 2004 || 0918.0 || 0918.0 || 2.0.0918.0 || Coming Soon || Dev-only iteration on 0912; bug fixes. || xenon-a (G5)
|-
| Sep 2004 || 0920.0 || 0920.0 || 2.0.0920.0 || Coming Soon || Internal alpha stabilization build. || xenon-a (G5)
|-
| Sep 2004 || 0923.0 || 0923.0 || 2.0.0923.0 || Coming Soon || External branch integration test. || xenon-a (G5)
|-
| Sep 2004 || 0930.0 || 0930.0 || 2.0.0930.0 || Coming Soon || Major FriendsUI checkpoint build; pre-final Alpha run. || xenon-a (G5)
|-
| Sep 2004 || 0935.0 || 0935.0 || 2.0.0935.0 || Coming Soon || Last confirmed Alpha compiler refresh. || xenon-a (G5)
|-
| Oct 2004 || 1001.0 || 1001.0 || 2.0.1001.0 || Coming Soon || SDK cleanup build; compiler tool refresh. || xenon-a (G5)
|-
| Oct 2004 || 1004.0 || 1004.0 || 2.0.1004.0 || Coming Soon || Memory bandwidth retuning; GPU init fix. || xenon-a (G5)
|-
| Oct 2004 || 1011.0 || 1011.0 || 2.0.1011.0 || Coming Soon || Main branch external release. || xenon-a (G5)
|-
| Oct 2004 || 1016.0 || 1016.0 || 2.0.1016.0 || Coming Soon || Final internal Alpha validation build. || xenon-a (G5)
|-
| Nov 2004 || 1075.0 || 1075.0 || 2.0.1075.0 || Coming Soon || Localization & QA checkpoint. || xenon-a (G5)
|-
| Nov 2004 || 1082.0 || 1082.0 || 2.0.1082.0 || Coming Soon || Minor fix build preceding final. || xenon-a (G5)
|-
| Nov 2004 || 1084.0 || 1084.0 || 2.0.1084.0 || Coming Soon || SDK QFE for late Alpha transition. || xenon-a / xenon-sd
|-
| Dec 2004 || 1201.0 || 1201.0 || 2.0.1201.0 || Coming Soon || Hand-off build for EV1 pre-production testing. || xenon-a (G5)
|-
| Dec 2004 || 1204.0 || 1204.0 || 2.0.1204.0 || Coming Soon || Memory controller patch; QA bug fixes. || xenon-a (G5)
|-
| Dec 2004 || 1205.0 || 1205.0 || 2.0.1205.0 || Coming Soon || Final Alpha candidate; factory image for EV1 boards. || xenon-a (G5)
|-
| Dec 2004 || 1208.0 || 1208.0 || 2.0.1208.0 || Coming Soon || Final Alpha SDK release; EV1 hardware prep. || xenon-a (G5)
|-
| Dec 2004 || 1210.0 || 1210.0 || 2.0.1210.0 || Coming Soon || End-of-year stability roll-up and handoff to EV team. || xenon-a (G5)
|}
== 2005 Builds ==
{| class="wikitable sortable" style="width:100%;"
! Build Date !! XSS Build !! SDK Build !! Kernel Version !! Video Walkthrough !! Notes !! ROM Compatibility
|-
| Jan 2005 || 1242.0 || 1242.0 || 2.0.1242.0 || Coming Soon || Final Alpha → EV transition build; new controller activation and XBDM hooks. || xenon-a / xenon-sd
|-
| Jan 2005 || 1265.0 || 1265.0 || 2.0.1265.0 || Coming Soon || First EV1 public SDK; significant kernel cleanup. || xenon-r1 (WN1)
|-
| Jan 2005 || 1281.0 || 1281.0 || 2.0.1281.0 || Coming Soon || Graphics HAL updates; Direct3D test driver added. || xenon-r1 (WN1)
|-
| Feb 2005 || 1300.0 || 1300.0 || 2.0.1300.0 || Coming Soon || Audio subsystem re-architecture; Dolby encoder enabled. || xenon-r1 (WN1)
|-
| Feb 2005 || 1332.0 || 1332.0 || 2.0.1332.0 || Coming Soon || Beta hardware thermal tuning; network stack migrated. || xenon-r1 (WN1)
|-
| Feb 2005 || 1365.0 || 1365.0 || 2.0.1365.0 || Coming Soon || New bootloader interface; factory signature test. || xenon-r1 (WN1)
|-
| Mar 2005 || 1408.0 || 1408.0 || 2.0.1408.0 || Coming Soon || Network test kernel; GPU microcode update. || xenon-r1 (WN1)
|-
| Mar 2005 || 1428.0 || 1428.0 || 2.0.1428.0 || Coming Soon || Adds Rich Presence API; HUD flicker fix. || xenon-r1 (WN1)
|-
| Mar 2005 || 1445.0 || 1445.0 || 2.0.1445.0 || Coming Soon || SDK feature expansion; first appearance of retail-mode toggles. || xenon-r1 (WN1)
|-
| Apr 2005 || 1500.0 || 1500.0 || 2.0.1500.0 || Coming Soon || Major SDK refactor; XShell 1.0 interface prototype. || xenon-r1 (WN1)
|-
| Apr 2005 || 1519.0 || 1519.0 || 2.0.1519.0 || Coming Soon || Video encoder improvements; guide performance pass. || xenon-r1 (WN1)
|-
| Apr 2005 || 1528.0 || 1528.0 || 2.0.1528.0 || Coming Soon || Early Xenon retail candidate kernel for test labs. || xenon-r1 (WN1)
|-
| May 2005 || 1601.0 || 1601.0 || 2.0.1601.0 || Coming Soon || Initial E3 demo branch; SDK “Blades” theme prototype. || xenon-r1 (WN1)
|-
| May 2005 || 1616.7 || 1616.7 || 2.0.1616.7 || Coming Soon || Factory kernel for WN1 EV3/EV4 hardware; stability baseline. || xenon-r1 (WN1)
|-
| May 2005 || 1630.0 || 1630.0 || 2.0.1630.0 || Coming Soon || Internal integration of performance counters and debug logging. || xenon-r1 (WN1)
|-
| Jun 2005 || 1640.0 || 1640.0 || 2.0.1640.0 || Coming Soon || Beta-preview hardware enablement; new DVD-emu module. || xenon-r1 (WN1)
|-
| Jun 2005 || 1655.0 || 1655.0 || 2.0.1655.0 || Coming Soon || Network stack cleanup and controller pairing update. || xenon-r1 (WN1)
|-
| Jun 2005 || 1672.0 || 1672.0 || 2.0.1672.0 || Coming Soon || Major SDK QFE; improved thread scheduler. || xenon-r1 (WN1)
|-
| Jun 2005 || 1690.0 || 1690.0 || 2.0.1690.0 || Coming Soon || Test kit manufacturing kernel; USB device stack update. || xenon-r1 (WN1)
|-
| Jun 2005 || 1700.0 || 1700.0 || 2.0.1700.0 || Coming Soon || Build used for E3 demos; first to include “Blade” dashboard assets. || xenon-r1 (WN1)
|-
| Jul 2005 || 1714.0 || 1714.0 || 2.0.1714.0 || Coming Soon || Factory diagnostics; added new NAND bootloader chain. || xenon-r1 (WN1)
|-
| Jul 2005 || 1721.0 || 1721.0 || 2.0.1721.0 || Coming Soon || Debug memory viewer; compiler sync to retail branch. || xenon-r1 (WN1)
|-
| Jul 2005 || 1740.0 || 1740.0 || 2.0.1740.0 || Coming Soon || Dashboard bug-fix build; new USB enumeration. || xenon-r1 (WN1)
|-
| Jul 2005 || 1760.0 || 1760.0 || 2.0.1760.0 || Coming Soon || Added partial retail-mode configuration to test kits. || xenon-r1 (WN1)
|-
| Aug 2005 || 1803.0 || 1803.0 || 2.0.1803.0 || Coming Soon || GPU microcode v7 update; improved framebuffer timing. || xenon-r2 (WN2)
|-
| Aug 2005 || 1825.0 || 1825.0 || 2.0.1825.0 || Coming Soon || New system update routine; better heat-throttling curve. || xenon-r2 (WN2)
|-
| Aug 2005 || 1840.0 || 1840.0 || 2.0.1840.0 || Coming Soon || Retail preparation; kernel signature logic finalized. || xenon-r2 (WN2)
|-
| Aug 2005 || 1873.0 || 1873.0 || 2.0.1873.0 || Coming Soon || Final XDK August build; side-car DVD emulator support. || xenon-r2 (WN2)
|-
| Sep 2005 || 1880.0 || 1880.0 || 2.0.1880.0 || Coming Soon || Production-ready build for mass-manufacturing test kits. || xenon-r2 (WN2)
|-
| Sep 2005 || 1881.0 || 1881.0 || 2.0.1881.0 || Coming Soon || Last internal pre-launch test pass. || xenon-r2 (WN2)
|-
| Sep 2005 || 1888.0 || 1888.0 || 2.0.1888.0 || Coming Soon || Retail base kernel (launch). || xenon-r2 (WN2)
|-
| Oct 2005 || 1900.0 || 1900.0 || 2.0.1900.0 || Coming Soon || Debug symbol refresh; retail certification prep. || xenon-r2 (WN2)
|-
| Oct 2005 || 1902.0 || 1902.0 || 2.0.1902.0 || Coming Soon || Factory QA test; HDD and DVD interface validation. || xenon-r2 (WN2)
|-
| Nov 2005 || 2241.0 || 2241.0 || 2.0.2241.0 || Coming Soon || Take-Home release candidate; launch promo SDK. || xenon-r2 (WN2)
|-
| Nov 2005 || 2255.0 || 2255.0 || 2.0.2255.0 || Coming Soon || Take-Home kernel; minor dashboard fixes. || xenon-r2 (WN2)
|-
| Nov 2005 || 2271.0 || 2271.0 || 2.0.2271.0 || Coming Soon || Early retail QFE. || xenon-r2 (WN2)
|-
| Nov 2005 || 2280.0 || 2280.0 || 2.0.2280.0 || Coming Soon || Localization and voice chat fixes. || xenon-r2 (WN2)
|-
| Dec 2005 || 2500.0 || 2500.0 || 2.0.2500.0 || Coming Soon || Manufacturing kernel for launch units. || xenon-r2 (WN2)
|-
| Dec 2005 || 2527.0 || 2527.0 || 2.0.2527.0 || Coming Soon || Day-1 retail update (launch dashboard revision). || xenon-r2 (WN2)
|-
| Dec 2005 || 2531.0 || 2531.0 || 2.0.2531.0 || Coming Soon || Minor post-launch bug fixes; DVD region check fix. || xenon-r2 (WN2)
|-
| Dec 2005 || 2540.0 || 2540.0 || 2.0.2540.0 || Coming Soon || Final 2005 main branch external release. || xenon-r2 (WN2)
|}
== 2006 Builds ==
{| class="wikitable sortable" style="width:100%;"
! Build Date !! XSS Build !! SDK Build !! Kernel Version !! Video Walkthrough !! Notes !! ROM Compatibility
|-
| Jan 2006 || 2552.0 || 2552.0 || 2.0.2552.0 || Coming Soon || Manufacturing QA kernel; start of post-launch retail QFE cycle. || xenon-r2 (WN2)
|-
| Jan 2006 || 2560.0 || 2560.0 || 2.0.2560.0 || Coming Soon || Retail recovery image test; dashboard assets update. || xenon-r2 (WN2)
|-
| Feb 2006 || 2571.0 || 2571.0 || 2.0.2255.0 || Coming Soon || Internal-only kernel for XDK feature testing. || xenon-r2 (WN2)
|-
| Feb 2006 || 2571.1 || 2571.1 || 2.0.2255.0 || Coming Soon || First external kernel with test-kit ROM. || xenon-r2 (WN2)
|-
| Mar 2006 || 2732.0 || 2732.0 || 2.0.2420.0 || Coming Soon || External main branch release. || xenon-r2 (WN2)
|-
| Mar 2006 || 2744.0 || 2744.0 || 2.0.2432.0 || Coming Soon || Bug fix and minor performance improvement build. || xenon-r2 (WN2)
|-
| Apr 2006 || 2808.0 || 2808.0 || 2.0.2508.0 || Coming Soon || Test-kit firmware refresh; dashboard performance pass. || xenon-r2 (WN2)
|-
| Apr 2006 || 2920.0 || 2920.0 || 2.0.2832.0 || Coming Soon || “Spring Update” preview integration. || xenon-r2 (WN2)
|-
| May 2006 || 3008.0 || 3008.0 || 2.0.2832.0 || Coming Soon || XUI update with retail dashboard improvements. || xenon-r2 (WN2)
|-
| May 2006 || 3100.0 || 3100.0 || 2.0.2832.0 || Coming Soon || Performance and dashboard bug fixes. || xenon-r2 (WN2)
|-
| Jun 2006 || 3400.0 || 3400.0 || 2.0.2858.0 || Coming Soon || Minor kernel fix before SDK QFE. || xenon-r2 (WN2)
|-
| Jun 2006 || 3424.0 || 3424.0 || 2.0.2858.0 || Coming Soon || SDK feature expansion (QFE). || xenon-r2 (WN2)
|-
| Jul 2006 || 3600.0 || 3600.0 || 2.0.2880.0 || Coming Soon || Network security patch. || xenon-r2 (WN2)
|-
| Jul 2006 || 3688.0 || 3688.0 || 2.0.2888.0 || Coming Soon || Added new internal dev hooks. || xenon-r2 (WN2)
|-
| Aug 2006 || 4000.0 || 4000.0 || 2.0.2930.0 || Coming Soon || Studio-request build; bug-fix release. || xenon-r2 (WN2)
|-
| Aug 2006 || 4200.0 || 4200.0 || 2.0.2950.0 || Coming Soon || Test-kit recovery kernel; updated HDD partitioning. || xenon-r2 (WN2)
|-
| Sep 2006 || 4400.0 || 4400.0 || 2.0.3000.0 || Coming Soon || Dashboard UI update; localization refresh. || xenon-r2 (WN2)
|-
| Sep 2006 || 4500.0 || 4500.0 || 2.0.3100.0 || Coming Soon || GPU driver optimization; new recovery installer. || xenon-r2 (WN2)
|-
| Oct 2006 || 4600.0 || 4600.0 || 2.0.3400.0 || Coming Soon || Bug fix; preparation for Fall Update. || xenon-r2 (WN2)
|-
| Nov 2006 || 4802.0 || 4802.0 || 2.0.4532.0 || Coming Soon || Fall Update (Launch Dashboard). || xenon-r2 / zephyr-r1 (WN2)
|-
| Nov 2006 || 4814.0 || 4814.0 || 2.0.4532.0 || Coming Soon || External QFE patch to Fall Update. || xenon-r2 / zephyr-r1 (WN2)
|-
| Dec 2006 || 4928.0 || 4928.0 || 2.0.4548.0 || Coming Soon || Zephyr enablement build. || xenon-r2 / zephyr-r1 (WN2)
|-
| Dec 2006 || 4929.0 || 4929.0 || 2.0.4548.0 || Coming Soon || Adds Zephyr ROM; HDMI support preparation. || xenon-r2 / zephyr-r1 (WN2)
|-
| Dec 2006 || 4933.0 || 4933.0 || 2.0.4548.0 || Coming Soon || Final 2006 SDK external release. || xenon-r2 / zephyr-r1 (WN2)
|}
== 2007 Builds ==
{| class="wikitable sortable" style="width:100%;"
! Build Date !! XSS Build !! SDK Build !! Kernel Version !! Video Walkthrough !! Notes !! ROM Compatibility
|-
| Jan 2007 || 5408.0 || 5408.0 || 2.0.5408.0 || Coming Soon || Internal build; kernel scheduler and NAND timing updates. || xenon-r2 (WN2)
|-
| Jan 2007 || 5501.0 || 5501.0 || 2.0.5501.0 || Coming Soon || External QFE release. || xenon-r2 (WN2); zephyr-r1 (WN2)
|-
| Feb 2007 || 5530.0 || 5530.0 || 2.0.5530.0 || Coming Soon || Studio-request build; adds early Falcon ROM support. || xenon-r2; zephyr-r1
|-
| Apr 2007 || 5600.0 || 5600.0 || 2.0.5600.0 || Coming Soon || Factory test branch kernel. || xenon-r2 (WN2)
|-
| May 2007 || 5632.2 || 5632.2 || 2.0.5759.0 || Coming Soon || Main branch external release; minor UI changes. || xenon-r2 (WN2)
|-
| May 2007 || 5632.4 || 5632.4 || 2.0.5759.0 || Coming Soon || Studio QFE patch for 5632.2. || xenon-r2 (WN2)
|-
| May 2007 || 5759.0 || 5759.0 || 2.0.5759.0 || Coming Soon || Internal/External dual build; supports Zephyr and early Falcon. || xenon-r2 (WN2); zephyr-r1 (WN2); falcon-r1 (Loki)
|-
| Jun 2007 || 6132.0 || 6132.0 || 2.0.5759.0 || Coming Soon || Studio request (EA); bug-fix roll-up. || xenon-r2 (WN2); zephyr-r1 (WN2)
|-
| Jun 2007 || 6132.2 || 6132.2 || 2.0.5766.0 || Coming Soon || Same as 6132.0 with additional UI assets. || xenon-r2 (WN2); zephyr-r1 (WN2)
|-
| Jun 2007 || 6132.5 || 6132.5 || 2.0.5759.0 || Coming Soon || Maintenance build; partner studio request. || xenon-r2 (WN2)
|-
| Jul 2007 || 6274.0 || 6274.0 || 2.0.5759.0 || Coming Soon || External QFE release; intro of Zephyr_B and Zephyr_C ROMs. || xenon-r2; zephyr-r1; Zephyr_B; Zephyr_C
|-
| Jul 2007 || 6274.2 || 6274.2 || 2.0.5766.0 || Coming Soon || Studio-request release for compatibility testing. || xenon-r2; zephyr-r1; Zephyr_B; Zephyr_C
|-
| Aug 2007 || 6534.0 || 6534.0 || 2.0.5787.0 || Coming Soon || Main branch external; final WN2 kernel for Zephyr. || xenon-r2; zephyr-r1; Zephyr_B; Zephyr_C
|-
| Aug 2007 || 6534.4 || 6534.4 || 2.0.6683.0 || Coming Soon || Main branch external; supports Falcon test boards. || xenon-r2; zephyr-r1; Zephyr_B; Zephyr_C; falcon-r1
|-
| Sep 2007 || 6742.0 || 6742.0 || 2.0.6742.0 || Coming Soon || Final external 2007 SDK; introduces Falcon (Loki) in full. || xenon-r2; zephyr-r1; falcon-r1 (Loki)
|-
| Sep 2007 || 6742.1 || 6742.1 || 2.0.6742.1 || Coming Soon || Minor bug-fix follow-up build. || xenon-r2; zephyr-r1; falcon-r1
|-
| Oct 2007 || 6760.0 || 6760.0 || 2.0.6760.0 || Coming Soon || Studio-request test kernel; factory QA. || xenon-r2; zephyr-r1; falcon-r1
|-
| Nov 2007 || 6771.0 || 6771.0 || 2.0.6771.0 || Coming Soon || Studio-internal preview; bug fixes for Fall 2007 update. || xenon-r2; zephyr-r1; falcon-r1
|-
| Nov 2007 || 6780.0 || 6780.0 || 2.0.6780.0 || Coming Soon || Main branch maintenance release. || xenon-r2; zephyr-r1; falcon-r1
|-
| Dec 2007 || 6788.0 || 6788.0 || 2.0.6788.0 || Coming Soon || Final 2007 build; transition to 2008 base kernel. || xenon-r2; zephyr-r1; falcon-r1
|}
== 2008 Builds ==
{| class="wikitable sortable" style="width:100%;"
! Build Date !! XSS Build !! SDK Build !! Kernel Version !! Video Walkthrough !! Notes !! ROM Compatibility
|-
| Jan 2008 || 6900.0 || 6900.0 || 2.0.6683.0 || Coming Soon || Internal main branch continuation; pre-Jasper SDK merge. || xenon-r2; zephyr-r1; falcon-r1 (Loki)
|-
| Feb 2008 || 6995.0 || 6995.0 || 2.0.6686.0 || Coming Soon || Main branch external release; first SDK with Falcon ROM. || xenon-r2; zephyr-r1; falcon-r1 (Loki)
|-
| Feb 2008 || 6995.1 || 6995.1 || 2.0.6690.0 || Coming Soon || External patch for 6995.0; factory QA branch. || xenon-r2; zephyr-r1; falcon-r1
|-
| Mar 2008 || 7015.0 || 7015.0 || 2.0.6690.0 || Coming Soon || Studio-request build for engine testing. || xenon-r2; zephyr-r1; falcon-r1
|-
| Apr 2008 || 7114.0 || 7114.0 || 2.0.6690.0 || Coming Soon || External build with minor network fixes. || xenon-r2; zephyr-r1; falcon-r1
|-
| Apr 2008 || 7201.0 || 7201.0 || 2.0.6690.0 || Coming Soon || SDK QFE for middleware vendors. || xenon-r2; zephyr-r1; falcon-r1
|-
| May 2008 || 7645.0 || 7645.0 || 2.0.6690.0 || Coming Soon || Main branch external release; common in development kits. || xenon-r2; zephyr-r1; falcon-r1; jasper-r1
|-
| Jun 2008 || 7714.0 || 7714.0 || 2.0.6714.0 || Coming Soon || Internal test release; early Jasper ROM work. || xenon-r2; zephyr-r1; falcon-r1; jasper-r1
|-
| Jun 2008 || 7717.0 || 7717.0 || 2.0.6717.0 || Coming Soon || QFE fix for 7714; internal and external parity build. || xenon-r2; zephyr-r1; falcon-r1; jasper-r1
|-
| Jul 2008 || 7776.0 || 7776.0 || 2.0.6719.0 || Coming Soon || Main branch release; early NXE prep kernel. || xenon-r2; zephyr-r1; falcon-r1; jasper-r1
|-
| Jul 2008 || 7776.1 || 7776.1 || 2.0.6719.0 || Coming Soon || External QFE for 7776.0; official partner build. || xenon-r2; zephyr-r1; falcon-r1; jasper-r1
|-
| Aug 2008 || 7800.0 || 7800.0 || 2.0.7308.0 || Coming Soon || NXE prototype dashboard testing branch. || xenon-r2; zephyr-r1; falcon-r1; jasper-r1
|-
| Sep 2008 || 7936.0 || 7936.0 || 2.0.7936.0 || Coming Soon || Main branch external release; SDK compatibility QFE. || xenon-r2; zephyr-r1; falcon-r1; jasper-r1
|-
| Sep 2008 || 7938.0 || 7938.0 || 2.0.7938.0 || Coming Soon || Studio-request build for video playback QA. || xenon-r2; zephyr-r1; falcon-r1; jasper-r1
|-
| Oct 2008 || 7352.0 || 7352.0 || 2.0.7352.0 || Coming Soon || Take-Home package; first NXE user interface test. || xenon-r2; zephyr-r1; falcon-r1; jasper-r1
|-
| Oct 2008 || 7978.0 || 7978.0 || 2.0.7342.0 || Coming Soon || Studio-request build for localized dashboard QA. || xenon-r2; zephyr-r1; falcon-r1; jasper-r1
|-
| Nov 2008 || 7357.0 || 7357.0 || 2.0.7357.0 || Coming Soon || External release; first NXE dashboard public branch. || xenon-r2; zephyr-r1; falcon-r1; jasper-r1
|-
| Nov 2008 || 7363.0 || 7363.0 || 2.0.7363.0 || Coming Soon || Factory QFE; bug fixes to NXE launch branch. || xenon-r2; zephyr-r1; falcon-r1; jasper-r1
|-
| Dec 2008 || 7381.0 || 7381.0 || 2.0.7381.0 || Coming Soon || End-of-year NXE update; retail dashboard sync. || xenon-r2; zephyr-r1; falcon-r1; jasper-r1
|-
| Dec 2008 || 7390.0 || 7390.0 || 2.0.7390.0 || Coming Soon || Minor NXE patch; video codec updates. || xenon-r2; zephyr-r1; falcon-r1; jasper-r1
|}
== 2009 Builds ==
{| class="wikitable sortable" style="width:100%;"
! Build Date !! XSS Build !! SDK Build !! Kernel Version !! Video Walkthrough !! Notes !! ROM Compatibility
|-
| Jan 2009 || 8000.0 || 8000.0 || 2.0.8000.0 || Coming Soon || First major NXE maintenance kernel. || xenon-r2; zephyr-r1; falcon-r1; jasper-r1
|-
| Feb 2009 || 8250.0 || 8250.0 || 2.0.8250.0 || Coming Soon || Bug-fix branch; video pipeline improvements. || xenon-r2; zephyr-r1; falcon-r1; jasper-r1
|-
| Mar 2009 || 8276.0 || 8276.0 || 2.0.7366.0 || Coming Soon || Main branch external release; SDK stability QFE. || xenon-r2; zephyr-r1; falcon-r1; jasper-r1
|-
| Mar 2009 || 8276.1 || 8276.1 || 2.0.7371.0 || Coming Soon || SDK QFE for NXE; adds new DevLauncher support. || xenon-r2; zephyr-r1; falcon-r1; jasper-r1
|-
| Apr 2009 || 8325.0 || 8325.0 || 2.0.8325.0 || Coming Soon || Dashboard preview branch; system memory patch. || xenon-r2; zephyr-r1; falcon-r1; jasper-r1
|-
| May 2009 || 8456.0 || 8456.0 || 2.0.8456.0 || Coming Soon || NXE maintenance release; adds new error-reporting system. || xenon-r2; zephyr-r1; falcon-r1; jasper-r1
|-
| Jun 2009 || 8464.0 || 8464.0 || 2.0.8464.0 || Coming Soon || Partner studio release; bug fixes. || xenon-r2; zephyr-r1; falcon-r1; jasper-r1
|-
| Jun 2009 || 9063.0 || 9063.0 || 2.0.9063.0 || Coming Soon || Early Trinity integration kernel (unreleased). || xenon-r2; zephyr-r1; falcon-r1; jasper-r1; trinity-r1
|-
| Jun 2009 || 9065.0 || 9065.0 || 2.0.9065.0 || Coming Soon || Bug fixes; XShell refactor. || xenon-r2; zephyr-r1; falcon-r1; jasper-r1; trinity-r1
|-
| Jun 2009 || 9068.0 || 9068.0 || 2.0.9068.0 || Coming Soon || Early Kinect (Natal) input stub added. || xenon-r2; zephyr-r1; falcon-r1; jasper-r1; trinity-r1
|-
| Jul 2009 || 9069.0 || 9069.0 || 2.0.9069.0 || Coming Soon || Performance tuning and GPU watchdog patch. || xenon-r2; zephyr-r1; falcon-r1; jasper-r1
|-
| Jul 2009 || 9071.0 || 9071.0 || 2.0.9071.0 || Coming Soon || QA testing kernel for 9xxx branch. || xenon-r2; zephyr-r1; falcon-r1; jasper-r1
|-
| Jul 2009 || 9072.0 || 9072.0 || 2.0.9072.0 || Coming Soon || Internal test; beginning of Trinity EV3 branch. || xenon-r2; zephyr-r1; falcon-r1; jasper-r1; trinity-r1
|-
| Aug 2009 || 9074.0 || 9074.0 || 2.0.9074.0 || Coming Soon || Trinity EV3 manufacturing kernel. || xenon-r2; zephyr-r1; falcon-r1; jasper-r1; trinity-r1
|-
| Aug 2009 || 9328.0 || 9328.0 || 2.0.8464.0 || Coming Soon || Main branch external release; bug fixes and security patch. || xenon-r2; zephyr-r1; falcon-r1; jasper-r1
|-
| Aug 2009 || 9328.5 || 9328.5 || 2.0.8498.0 || Coming Soon || Main branch external QFE; stability fixes. || xenon-r2; zephyr-r1; falcon-r1; jasper-r1
|-
| Sep 2009 || 9328.8 || 9328.8 || 2.0.8507.0 || Coming Soon || Main branch update; adds system crash logging. || xenon-r2; zephyr-r1; falcon-r1; jasper-r1
|-
| Sep 2009 || 9472.0 || 9472.0 || 2.0.8009.0 || Coming Soon || Studio request; demo-unit factory kernel. || xenon-r2; zephyr-r1; falcon-r1; jasper-r1
|-
| Oct 2009 || 9134.0 || 9134.0 || 2.0.9134.0 || Coming Soon || Stability patch for 907x kernels; factory internal. || xenon-r2; zephyr-r1; falcon-r1; jasper-r1
|-
| Oct 2009 || 8958.0 || 8958.0 || 2.0.8958.0 || Coming Soon || Bug-fix build; early Kinect driver integration. || xenon-r2; zephyr-r1; falcon-r1; jasper-r1
|-
| Nov 2009 || 9501.0 || 9501.0 || 2.0.8014.0 || Coming Soon || Studio-request demo branch for internal events. || xenon-r2; zephyr-r1; falcon-r1; jasper-r1
|-
| Dec 2009 || 10089.0 || 10089.0 || 2.0.10089.0 || Coming Soon || End-of-year SDK; introduces Kinect preview APIs. || xenon-r2; zephyr-r1; falcon-r1; jasper-r1; trinity-r1
|}
== 2010 Builds ==
{| class="wikitable sortable" style="width:100%;"
! Build Date !! XSS Build !! SDK Build !! Kernel Version !! Video Walkthrough !! Notes !! ROM Compatibility
|-
| Jan 2010 || 9190.0 || 9190.0 || 2.0.9190.0 || Coming Soon || Pre-Natal integration kernel; first full Trinity compatibility test. || xenon-r2; zephyr-r1; falcon-r1; jasper-r1; trinity-r1
|-
| Feb 2010 || 9199.0 || 9199.0 || 2.0.9199.0 || Coming Soon || NXE QFE and Natal input stability fixes; widely distributed. || xenon-r2; zephyr-r1; falcon-r1; jasper-r1; trinity-r1
|-
| Feb 2010 || 11164.1 || 11164.1 || 2.0.8033.0 / 2.0.8955.0 / 2.0.9199.0 || Coming Soon || Main branch external release; final NXE kernel before Kinect SDK. || xenon-r2; zephyr-r1; falcon-r1; jasper-r1; trinity-r1
|-
| Mar 2010 || 11427.0 || 11427.0 || 2.0.11008.0 || Coming Soon || Early Kinect (“Natal”) devkit firmware. || xenon-r2; zephyr-r1; falcon-r1; jasper-r1; trinity-r1
|-
| Mar 2010 || 11461.0 || 11461.0 || 2.0.11003.0 || Coming Soon || “Natal Preview” kernel; SDK includes new sensor APIs. || xenon-r2; zephyr-r1; falcon-r1; jasper-r1; trinity-r1
|-
| Mar 2010 || 12087.0 || 12087.0 || 2.0.9199.0 / 2.0.11003.0 / 2.0.12087.0 || Coming Soon || Spring 2010 Preview; includes early Kinect shell elements. || xenon-r2; zephyr-r1; falcon-r1; jasper-r1; trinity-r1
|-
| Apr 2010 || 12138.0 || 12138.0 || 2.0.9199.0 / 2.0.11007.0 / 2.0.12138.0 || Coming Soon || Studio-request build; used by external partners for Kinect demo titles. || xenon-r2; zephyr-r1; falcon-r1; jasper-r1; trinity-r1
|-
| Apr 2010 || 11164.3 || 11164.3 || 2.0.8033.0 / 2.0.9199.0 || Coming Soon || Studio-request variant of 11164; added toolchain updates. || xenon-r2; zephyr-r1; falcon-r1; jasper-r1
|-
| May 2010 || 11511.0 || 11511.0 || 2.0.11025.0 || Coming Soon || Main branch external release; updated Kinect drivers. || xenon-r2; zephyr-r1; falcon-r1; jasper-r1; trinity-r1
|-
| May 2010 || 11512.0 || 11512.0 || 2.0.11026.0 || Coming Soon || Follow-up to 11511; small SDK fixes. || xenon-r2; zephyr-r1; falcon-r1; jasper-r1
|-
| May 2010 || 11513.0 || 11513.0 || 2.0.11027.0 || Coming Soon || Updated retail compatibility test image. || xenon-r2; zephyr-r1; falcon-r1; jasper-r1
|-
| May 2010 || 11564.0 || 11564.0 || 2.0.9199.0 / 2.0.12145.0 / 2.0.99999.0 || Coming Soon || TakeHome flash package; pre-release Live client kernel. || xenon-r2; zephyr-r1; falcon-r1; jasper-r1; trinity-r1
|-
| Jun 2010 || 12230.0 || 12230.0 || 2.0.12230.0 || Coming Soon || Studio-request build for Kinect middleware validation. || xenon-r2; zephyr-r1; falcon-r1; jasper-r1
|-
| Jul 2010 || 12291.0 || 12291.0 || 2.0.12291.0 || Coming Soon || Public preview kernel for Kinect developer units. || xenon-r2; zephyr-r1; falcon-r1; jasper-r1; trinity-r1
|-
| Aug 2010 || 12416.0 || 12416.0 || 2.0.12416.0 || Coming Soon || Retail preview; added support for new system NAND layouts. || xenon-r2; zephyr-r1; falcon-r1; jasper-r1; trinity-r1
|-
| Sep 2010 || 12464.0 || 12464.0 || 2.0.12464.0 || Coming Soon || QFE update; includes Kinect shell and game SDK refinements. || xenon-r2; zephyr-r1; falcon-r1; jasper-r1; trinity-r1
|-
| Oct 2010 || 12606.0 || 12606.0 || 2.0.12606.0 || Coming Soon || Finalized retail dashboard for Kinect launch (NXE2). || xenon-r2; zephyr-r1; falcon-r1; jasper-r1; trinity-r1
|-
| Nov 2010 || 12611.0 || 12611.0 || 2.0.12611.0 || Coming Soon || Retail Kinect launch kernel; first NXE2 production release. || xenon-r2; zephyr-r1; falcon-r1; jasper-r1; trinity-r1
|-
| Dec 2010 || 12625.0 || 12625.0 || 2.0.12625.0 || Coming Soon || Year-end NXE2 QFE; retail performance fixes. || xenon-r2; zephyr-r1; falcon-r1; jasper-r1; trinity-r1
|}
== 2011 Builds ==
{| class="wikitable sortable" style="width:100%;"
! Build Date !! XSS Build !! SDK Build !! Kernel Version !! Video Walkthrough !! Notes !! ROM Compatibility
|-
| Jan 2011 || 12631.0 || 12631.0 || 2.0.12631.0 || Coming Soon || Early internal NXE2 follow-up build; stability testing for Slim units. || xenon-r2; zephyr-r1; falcon-r1; jasper-r1; trinity-r1
|-
| Feb 2011 || 12635.0 || 12635.0 || 2.0.12635.0 || Coming Soon || Retail maintenance kernel; Kinect calibration improvements. || xenon-r2; zephyr-r1; falcon-r1; jasper-r1; trinity-r1
|-
| Mar 2011 || 13141.0 || 13141.0 || 2.0.13141.0 || Coming Soon || Beta dashboard; updated Kinect runtime. || xenon-r2; zephyr-r1; falcon-r1; jasper-r1; trinity-r1
|-
| Apr 2011 || 13146.0 || 13146.0 || 2.0.13146.0 || Coming Soon || Beta retail update; adds XGD3 disc format support. || xenon-r2; zephyr-r1; falcon-r1; jasper-r1; trinity-r1
|-
| May 2011 || 13150.0 || 13150.0 || 2.0.13150.0 || Coming Soon || Early preview of Metro dashboard kernel. || xenon-r2; zephyr-r1; falcon-r1; jasper-r1; trinity-r1
|-
| Jun 2011 || 13599.0 || 13599.0 || 2.0.13599.0 || Coming Soon || Retail summer update; Live service patch. || xenon-r2; zephyr-r1; falcon-r1; jasper-r1; trinity-r1
|-
| Jul 2011 || 13604.0 || 13604.0 || 2.0.13604.0 || Coming Soon || Internal main branch; Metro UI test. || xenon-r2; zephyr-r1; falcon-r1; jasper-r1; trinity-r1
|-
| Aug 2011 || 13699.0 || 13699.0 || 2.0.13699.0 || Coming Soon || Internal developer update for partner SDKs. || xenon-r2; zephyr-r1; falcon-r1; jasper-r1; trinity-r1
|-
| Sep 2011 || 13785.0 || 13785.0 || 2.0.13785.0 || Coming Soon || Public beta branch; Metro-style dash rollout. || xenon-r2; zephyr-r1; falcon-r1; jasper-r1; trinity-r1; corona-r1
|-
| Oct 2011 || 13804.0 || 13804.0 || 2.0.13804.0 || Coming Soon || Factory pre-install branch for 2011 retail units. || trinity-r1; corona-r1
|-
| Nov 2011 || 14699.0 || 14699.0 || 2.0.14699.0 || Coming Soon || Official “Metro” dashboard release (Fall 2011 update). || trinity-r1; corona-r1
|-
| Dec 2011 || 14717.0 || 14717.0 || 2.0.14717.0 || Coming Soon || Maintenance build; dashboard UI bug fixes. || trinity-r1; corona-r1
|-
| Dec 2011 || 14719.0 || 14719.0 || 2.0.14719.0 || Coming Soon || Retail update for 2011 consoles; Live service adjustments. || trinity-r1; corona-r1
|}
== 2012 Builds ==
{| class="wikitable sortable" style="width:100%;"
! Build Date !! XSS Build !! SDK Build !! Kernel Version !! Video Walkthrough !! Notes !! ROM Compatibility
|-
| Jan 2012 || 14785.0 || 14785.0 || 2.0.14785.0 || Coming Soon || Internal maintenance build; kernel cleanup and scheduler updates. || trinity-r1; corona-r1
|-
| Feb 2012 || 14789.0 || 14789.0 || 2.0.14789.0 || Coming Soon || Minor QFE; dash memory optimization. || trinity-r1; corona-r1
|-
| Mar 2012 || 15557.0 || 15557.0 || 2.0.15557.0 || Coming Soon || Metro UI polish build; pre-summer beta branch. || trinity-r1; corona-r1
|-
| Apr 2012 || 15572.0 || 15572.0 || 2.0.15572.0 || Coming Soon || Public beta kernel; network stability fixes. || trinity-r1; corona-r1
|-
| May 2012 || 15574.0 || 15574.0 || 2.0.15574.0 || Coming Soon || Summer 2012 dashboard release; retail rollout kernel. || trinity-r1; corona-r1
|-
| Jun 2012 || 16202.0 || 16202.0 || 2.0.16202.0 || Coming Soon || Developer update; Xbox Live protocol update. || trinity-r1; corona-r1
|-
| Jul 2012 || 16203.0 || 16203.0 || 2.0.16203.0 || Coming Soon || SDK branch; partner demo kernel. || trinity-r1; corona-r1
|-
| Aug 2012 || 16209.0 || 16209.0 || 2.0.16209.0 || Coming Soon || Factory QA update; manufacturing kernel for 2012 units. || trinity-r1; corona-r1
|-
| Sep 2012 || 16211.0 || 16211.0 || 2.0.16211.0 || Coming Soon || Minor QFE; stability and Kinect fixes. || trinity-r1; corona-r1
|-
| Oct 2012 || 16212.0 || 16212.0 || 2.0.16212.0 || Coming Soon || Xbox Live compatibility kernel update. || trinity-r1; corona-r1
|-
| Nov 2012 || 16217.0 || 16217.0 || 2.0.16217.0 || Coming Soon || Dashboard refresh; improved security layer. || trinity-r1; corona-r1
|-
| Dec 2012 || 16232.0 || 16232.0 || 2.0.16232.0 || Coming Soon || Pre-“Xbox 360E” kernel branch; adds revised NAND layout support. || trinity-r1; corona-r2
|}
== 2013 Builds ==
{| class="wikitable sortable" style="width:100%;"
! Build Date !! XSS Build !! SDK Build !! Kernel Version !! Video Walkthrough !! Notes !! ROM Compatibility
|-
| Jan 2013 || 16243.0 || 16243.0 || 2.0.16243.0 || Coming Soon || Internal early-year refresh; QA branch. || trinity-r1; corona-r2
|-
| Feb 2013 || 16267.0 || 16267.0 || 2.0.16267.0 || Coming Soon || Metro UI refresh; partner demo kernel. || trinity-r1; corona-r2
|-
| Mar 2013 || 16283.0 || 16283.0 || 2.0.16283.0 || Coming Soon || Security certificate update; network layer fixes. || trinity-r1; corona-r2
|-
| Apr 2013 || 16285.0 || 16285.0 || 2.0.16285.0 || Coming Soon || Internal main branch; Live service beta testing. || trinity-r1; corona-r2
|-
| May 2013 || 16297.0 || 16297.0 || 2.0.16297.0 || Coming Soon || Studio-request build; certification toolchain update. || trinity-r1; corona-r2
|-
| Jun 2013 || 16299.0 || 16299.0 || 2.0.16299.0 || Coming Soon || Manufacturing kernel for Xbox 360E retail systems. || trinity-r1; corona-r2
|-
| Jul 2013 || 16306.0 || 16306.0 || 2.0.16306.0 || Coming Soon || Xbox 360E retail dashboard; Live services unified build. || trinity-r1; corona-r2
|-
| Aug 2013 || 16309.0 || 16309.0 || 2.0.16309.0 || Coming Soon || Post-retail patch for system service reliability. || trinity-r1; corona-r2
|-
| Sep 2013 || 16319.0 || 16319.0 || 2.0.16319.0 || Coming Soon || Partner SDK update; Xbox One integration support hooks. || trinity-r1; corona-r2
|-
| Oct 2013 || 16537.0 || 16537.0 || 2.0.16537.0 || Coming Soon || Retail Fall 2013 dashboard; last full SDK release. || trinity-r1; corona-r2
|-
| Nov 2013 || 16547.0 || 16547.0 || 2.0.16547.0 || Coming Soon || Final cross-platform 360/One update; Live service compatibility. || trinity-r1; corona-r2
|-
| Dec 2013 || 16559.0 || 16559.0 || 2.0.16559.0 || Coming Soon || End-of-year QFE for 360E hardware; last known devkit kernel. || trinity-r1; corona-r2
|}
== 2014 Builds ==
{| class="wikitable sortable" style="width:100%;"
! Build Date !! XSS Build !! SDK Build !! Kernel Version !! Video Walkthrough !! Notes !! ROM Compatibility
|-
| Jan 2014 || 16565.0 || 16565.0 || 2.0.16565.0 || Coming Soon || Minor Live service patch; post-launch system update. || trinity-r1; corona-r2
|-
| Feb 2014 || 16575.0 || 16575.0 || 2.0.16575.0 || Coming Soon || Retail kernel; dashboard performance and connection fixes. || trinity-r1; corona-r2
|-
| Mar 2014 || 16600.0 || 16600.0 || 2.0.16600.0 || Coming Soon || Internal QA build; never publicly deployed. || trinity-r1; corona-r2
|-
| Apr 2014 || 16606.0 || 16606.0 || 2.0.16606.0 || Coming Soon || Developer dashboard update; Live channel hooks added. || trinity-r1; corona-r2
|-
| May 2014 || 16747.0 || 16747.0 || 2.0.16747.0 || Coming Soon || Retail Spring Update; refreshed store layout. || trinity-r1; corona-r2
|-
| Jul 2014 || 16756.0 || 16756.0 || 2.0.16756.0 || Coming Soon || Security revision kernel; minor Live and app patches. || trinity-r1; corona-r2
|-
| Aug 2014 || 16767.0 || 16767.0 || 2.0.16767.0 || Coming Soon || Factory image; Xbox Live compliance update. || trinity-r1; corona-r2
|-
| Sep 2014 || 16775.0 || 16775.0 || 2.0.16775.0 || Coming Soon || Internal partner build; dashboard telemetry test. || trinity-r1; corona-r2
|-
| Oct 2014 || 16785.0 || 16785.0 || 2.0.16785.0 || Coming Soon || Maintenance QFE; core system memory fixes. || trinity-r1; corona-r2
|-
| Nov 2014 || 17150.0 || 17150.0 || 2.0.17150.0 || Coming Soon || Retail Fall Update; store UI patch and app security update. || trinity-r1; corona-r2
|-
| Dec 2014 || 17159.0 || 17159.0 || 2.0.17159.0 || Coming Soon || Final 2014 kernel; last developer-side update for SDK tools. || trinity-r1; corona-r2
|}
== 2015 Builds ==
{| class="wikitable sortable" style="width:100%;"
! Build Date !! XSS Build !! SDK Build !! Kernel Version !! Video Walkthrough !! Notes !! ROM Compatibility
|-
| Jan 2015 || 17180.0 || 17180.0 || 2.0.17180.0 || Coming Soon || Early-year Live connectivity patch. || trinity-r1; corona-r2
|-
| Feb 2015 || 17349.0 || 17349.0 || 2.0.17349.0 || Coming Soon || Minor update; service token refresh. || trinity-r1; corona-r2
|-
| Mar 2015 || 17381.0 || 17381.0 || 2.0.17381.0 || Coming Soon || Security certificate rollover kernel. || trinity-r1; corona-r2
|-
| Apr 2015 || 17489.0 || 17489.0 || 2.0.17489.0 || Coming Soon || Dashboard performance patch; store module refresh. || trinity-r1; corona-r2
|-
| May 2015 || 17491.0 || 17491.0 || 2.0.17491.0 || Coming Soon || SDK QFE; internal developer tools update. || trinity-r1; corona-r2
|-
| Jul 2015 || 17502.0 || 17502.0 || 2.0.17502.0 || Coming Soon || Retail mid-year dashboard update. || trinity-r1; corona-r2
|-
| Aug 2015 || 17511.0 || 17511.0 || 2.0.17511.0 || Coming Soon || Partner preview kernel; Xbox One Live protocol support. || trinity-r1; corona-r2
|-
| Sep 2015 || 17526.0 || 17526.0 || 2.0.17526.0 || Coming Soon || SDK synchronization patch; minor system tweaks. || trinity-r1; corona-r2
|-
| Oct 2015 || 17544.0 || 17544.0 || 2.0.17544.0 || Coming Soon || Factory and retail image alignment update. || trinity-r1; corona-r2
|-
| Nov 2015 || 17559.0 || 17559.0 || 2.0.17559.0 || Coming Soon || Final Xbox 360 public system update. || trinity-r1; corona-r2
|}











|}