XSS

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XSS (Xbox System Software)

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/2000–derived kernel, and it underpins the dashboard, recovery system, device drivers, and developer tooling for the platform.

Attribution
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.

Build Releases

An XSS version is expressed as four parts:

  • Major – kernel generation (on 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

Build Types

XSS components (kernel, import libraries, filesystems) are produced in three primary “flavors,” depending on the scenario:

  • Free (Retail) – Highly optimized for size/perf; no debug asserts; stripped symbols.
  • Checked (Debug) – Adds extra verification and diagnostics (argument checks, extended logs) to help isolate device-driver and memory issues.
  • Hybrid – A practical mix: mostly free, with selective checked bits and basic debug info; common for dev kit workflows.

Recoveries

A Recovery is a packaged update/restore workflow used to provision a development or test console (and sometimes to re-install/refresh a retail unit for validation). These are distributed to approved partners and studios and may be internal or external builds. On blank or manufacturing images, running a recovery may blow specific eFuses depending on target and flow.

Branches

XSS follows a standard source-control model:

  • Main branch – primary tree used for broad partner and retail releases.
  • Milestone/non-main branches – short-lived (or parallel) series (e.g., 15xx, 18xx, 17xxx) that can be cross-developed. When stable, changes are merged back to main after extensive BVT runs.

Known historical codenames on early branches include: A5, A6.

Recovery Build Types

  • External – Release-class builds (can mix free/checked/hybrid elements). Non-main branches are also compiled as External to maximize BVT coverage.
  • Internal – Debug-class builds packaged with internal tools (e.g., Xuite) and checked filesystems/libraries throughout.
  • TakeHome – A convenience package with themes, avatar assets, and bonus content aimed at wider evaluation.

Studios could request specific non-main builds when needed.

Recovery Options

During recovery you choose target profile:

  • Dev/Test selection
 * Deploys a checked Kernel/ROM (TestKit or DevKit ROM depending on fuses)
 * Filesystems/libraries are checked or mixed (hybrid)
 * Sets the developer launcher (xshell.xex) as default title
  • Retail selection
 * Deploys a free Kernel/ROM and free filesystems/libraries
 * Sets the standard dashboard (dash.xex) as default title
 * Omits XBDM.xex (debug manager) from the filesystem

Note: choosing Retail on a system whose eFuses are already blown will not re-blow them.

Special Builds

  • ChinaDeploy – Variants with additional options for Chinese default language; limited public details.
  • Unsecured Recovery – Highly restricted recoveries that can recover consoles in an unsecured state (aka “Superdevkit”).

Software Development Kit

The 360 SDK provides the toolchain and validation utilities for building, profiling, and testing titles and system software. Access was provided through Microsoft’s partner program; external/main-branch releases typically align closely to the month around their build date in partner drops.

Known XSS Build List

How to read this table
Each row is a specific external/internal build snapshot. We’ve added four CNH-specific columns so you can quickly see what’s available to download or watch, and where it works.


Notes for CNH editors
* Availability — e.g., “Public if u look you can find ”, “Not Public may be Privately owed ””.
* Bounty — A Bounty reward for any xss that are not publicly available ; use N/A if none.
* Video Walkthrough — YouTube video from boot and navigating the menus (YouTube/Vimeo).
* Compatibility — hardware target(s): e.g., xenon-a, xenon-r1 (WN1/2), zephyr-r1, falcon-r1 (Loki), jasper-r1, etc.

Sources & Attribution

  • XenonLibrary – “[XSS]” (accessed 23 February 2026). 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).


Known XSS Build List

Built from XenonLibrary data (used with permission). Extra columns added for CNH.
Build Date XSS/SDK Build Kernel Notes Availability Bounty Video Walkthrough Compatibility
2004
January 2004 0180.0 2.0.0180.0 Internal/External. — — — xenon-a (Power Mac G5)
January 2004 0189.0 2.0.0189.0 Internal/External. Update to SDK tools. Bug fixes. — — — xenon-a (Power Mac G5)
January 2004 0193.0 2.0.0193.0 Internal/External. Fixed fan issue. LINKER_STACKSIZE to 1MB. Bug fixes. — — — xenon-a (Power Mac G5)
February 2004 0194.0 2.0.0194.0 Internal/External. Updated fan driver. Bug fixes. — — — xenon-a (Power Mac G5)
February 2004 0195.0 2.0.0195.0 Internal/External. 480p support added. Launcher localization. Bug fixes. — — — xenon-a (Power Mac G5)
February 2004 0196.0 2.0.0196.0 Internal/External. Warm boot GPU hang note; launcher bitmap change. Bug fixes. — — — —
February 2004 0197.0 2.0.0197.0 Internal/External. New compiler toolset. Bug fixes. — — — xenon-a (Power Mac G5)
February 2004 0198.0 2.0.0198.0 Internal. — — — xenon-a (Power Mac G5)
February 2004 0199.0 2.0.0199.0 Internal. Final A5 milestone (initial partner release) merged to main. — — — xenon-a (Power Mac G5)
February 2004 0201.0 2.0.0201.0 Internal/External. New compiler toolset. Bug fixes. — — — xenon-a (Power Mac G5)
February 2004 0202.0 2.0.0202.0 Internal/External. Fan driver; G5 memory latency; FPU/VPU fix. Bug fixes. — — — xenon-a (Power Mac G5)
February 2004 0203.0 2.0.0203.0 Internal/External. Bug fixes. — — — xenon-a (Power Mac G5)
February 2004 0205.0 2.0.0205.0 Internal/External. Bug fixes. — — — xenon-a (Power Mac G5)
February 2004 0208.0 2.0.0208.0 Internal/External. Bug fixes. — — — xenon-a (Power Mac G5)
February 2004 0211.0 2.0.0211.0 Internal/External. Artifacting while launcher runs. Bug fixes. — — — xenon-a (Power Mac G5)
March 2004 0311.0 2.0.0311.0 Internal/External. New compiler toolset. Bug fixes. — — — xenon-a (Power Mac G5)
March 2004 0313.0 2.0.0313.0 Internal/External. Bug fixes. — — — xenon-a (Power Mac G5)
March 2004 0314.0 2.0.0314.0 Internal/External. Bug fixes. — — — xenon-a (Power Mac G5)
March 2004 0316.0 2.0.0316.0 Internal/External. Bug fixes. — — — xenon-a (Power Mac G5)
March 2004 0327.0 2.0.0327.0 Internal/External. Localization fixes. Minimal 720p. Bug fixes. — — — xenon-a (Power Mac G5)
March 2004 0329.0 2.0.0329.0 Internal/External. Bug fixes. — — — xenon-a (Power Mac G5)
March 2004 0330.0 2.0.0330.0 Internal/External. Bug fixes. — — — xenon-a (Power Mac G5)
March 2004 0338.0 2.0.0338.0 Internal/External. — — — xenon-a (Power Mac G5)
March 2004 0401.0 2.0.0401.0 Internal/External. Bug fixes. — — — xenon-a (Power Mac G5)
March 2004 0402.0 2.0.0402.0 Internal/External. Bug fixes. — — — xenon-a (Power Mac G5)
April 2004 0419.0 2.0.0419.0 Internal/External. Bug fixes. — — — xenon-a (Power Mac G5)
April 2004 0420.0 2.0.0420.0 Internal/External. XUI interpolation improvements. Bug fixes. — — — xenon-a (Power Mac G5)
April 2004 0422.0 2.0.0422.0 Internal/External. New compiler toolset. Bug fixes. — — — xenon-a (Power Mac G5)
April 2004 0424.0 2.0.0424.0 Internal/External. XUI improvements; DrawPrimitiveUP for Shrek. Bug fixes. — — — xenon-a (Power Mac G5)
May 2004 0431.0 2.0.0431.0 Internal/External. Compiler based on VC++ 2005 “Whidbey”; conformance & FP model. Bug fixes. — — — SDK QFE
June 2004 0530.0 2.0.0530.0 Internal/External. Main branch external release. Bug fixes. — — — xenon-a (Power Mac G5)
June 2004 0530.1 2.0.0530.0 Internal/External. Bug fixes. — — — xenon-a (Power Mac G5)
June 2004 0612.0 2.0.0612.0 Internal/External. Bug fixes. — — — —
June 2004 0615.0 2.0.0615.0 Internal/External. Main branch external. Early PIX; XACT 2.0 authoring; network DVD emu. Bug fixes. — — — xenon-a (Power Mac G5)
June 2004 0620.0 2.0.0620.0 Internal/External. Bug fixes. — — — —
June 2004 0622.0 2.0.0622.0 Internal/External. Bug fixes. — — — xenon-a (Power Mac G5)
June 2004 0625.0 2.0.0625.0 Internal/External. Bug fixes. — — — xenon-a (Power Mac G5)
June 2004 0634.0 2.0.0634.0 Internal/External. Main branch external release. Bug fixes. — — — —
July 2004 0708.0 2.0.0708.0 Internal/External. Bug fixes. — — — —
July 2004 0711.0 2.0.0711.0 Internal/External. Bug fixes. — — — —
July 2004 0713.0 2.0.0713.0 Internal/External. Bug fixes. — — — —
July 2004 0714.0 2.0.0714.0 Internal/External. Bug fixes. — — — —
July 2004 0715.0 2.0.0715.0 Internal/External. Bug fixes. — — — —
June 2004 0716.0 2.0.0716.0 Internal/External. Bug fixes. — — — —
August 2004 0731.0 2.0.0731.0 Internal/External. Bug fixes. — — — xenon-a (Power Mac G5)
August 2004 0810.0 2.0.0814.0 Internal/External. Bug fixes. — — — —
September 2004 0919.0 2.0.0919.0 Internal/External. Bug fixes. — — — xenon-a (Power Mac G5)
September 2004 0920.0 2.0.0920.0 Internal/External. Bug fixes. — — — xenon-a (Power Mac G5)
October 2004 0930.0 2.0.0930.0 Internal/External. Major FriendsUI checkpoint. Bug fixes. — — — xenon-a (Power Mac G5)
October 2004 1012.0 2.0.1012.0 Internal/External. Bug fixes. — — — SDK QFE
October 2004 1013.0 2.0.1013.0 Internal/External. Bug fixes. — — — SDK QFE
October 2004 1015.0 2.0.1015.0 Internal/External. Bug fixes. — — — SDK QFE
October 2004 1016.0 2.0.1016.0 Internal/External. Bug fixes. — — — SDK QFE
October 2004 1017.0 2.0.1017.0 Internal/External. Bug fixes. — — — SDK QFE
November 2004 1029.0 2.0.1029.0 Internal/External. Bug fixes. — — — xenon-a (Power Mac G5)
November 2004 1084.0 2.0.1084.0 Internal/External. — — — xenon-a (Power Mac G5) / xenon-sd (Shiva/DD.9)
November 2004 1108.0 2.0.1108.0 Internal/External. — — — SDK QFE
November 2004 1109.0 2.0.1109.0 Internal/External. — — — SDK QFE
November 2004 1111.0 2.0.1111.0 Internal/External. — — — SDK QFE
November 2004 1112.0 2.0.1112.0 Internal/External. — — — SDK QFE
November 2004 1113.0 2.0.1113.0 Internal/External. — — — SDK QFE
December 2004 1141.0 2.0.1141.0 Internal/External. — — — xenon-a (Power Mac G5)
December 2004 1203.0 2.0.1203.0 Internal/External. — — — xenon-a (Power Mac G5) / xenon-sd (Shiva/DD.9)
December 2004 1208.0 2.0.1208.0 Internal/External. — — — xenon-a (Power Mac G5) / xenon-sd (Shiva/DD.9)
2005
January 2005 1232.0 2.0.1232.0 Internal/External. Used for EV2 bringup. — — — xenon-a (Power Mac G5) / xenon-sd (Shiva/DD.9)
January 2005 1233.0 2.0.1233.0 Internal/External. Used for EV2 bringup. — — — xenon-a (Power Mac G5) / xenon-sd (Shiva/DD.9)
January 2005 1242.0 2.0.1242.0 Controllers inactive at boot; Alpha R300 dropped; R420 required; compiler bug (C10001). — — — xenon-a (Power Mac G5) / xenon-sd (Shiva/DD.9)
January 2005 1242.1 2.0.1242.1 Internal/External. Bug fixes. — — — SDK QFE
February 2005 1315.0 2.0.1315.0 Internal/External. Bug fixes. — — — xenon-a / xenon-sd / xenon-r1 (WN1)
February 2005 1329.0 2.0.1329.0 Internal/External. Bug fixes. — — — xenon-a / xenon-sd / xenon-r1 (WN1)
February 2005 1332.0 2.0.1332.0 Main branch external. New XSession API (matchmaking, leaderboards, quick voice chat). — — — xenon-a / xenon-sd / xenon-r1 (WN1)
March 2005 1418.0 2.0.1418.0 Internal/External. Bug fixes. — — — xenon-r1 (WN1)
March 2005 1419.0 2.0.1419.0 Internal/External. Bug fixes. — — — xenon-r1 (WN1)
March 2005 1423.0 2.0.1423.0 Internal/External. Bug fixes. — — — xenon-r1 (WN1)
March 2005 1427.0 2.0.1427.0 Internal/External. Bug fixes. — — — xenon-r1 (WN1)
March 2005 1428.0 2.0.1428.0 Live BVTs: Rich Presence & Session tests; HUD flicker fix. — — — xenon-r1 (WN1)
March 2005 1502.0 2.0.1502.0 15xx branch; pushed changes as 1428 (same day). — — — xenon-r1 (WN1)
March 2005 1429.0 2.0.1429.0 XSession API fixes. Bug fixes. — — — xenon-r1 (WN1)
March 2005 1430.0 2.0.1430.0 Bug fixes. — — — xenon-r1 (WN1)
March 2005 1504.0 2.0.1504.0 Bug fixes. — — — xenon-r1 (WN1)
March 2005 1433.0 2.0.1433.0 Bug fixes. — — — xenon-r1 (WN1)
2005
January 2005 1232.0 2.0.1232.0 Internal/External. Used for EV2 bringup. — — — xenon-a (Power Mac G5); xenon-sd (Shiva/DD.9)
January 2005 1233.0 2.0.1233.0 Internal/External. Used for EV2 bringup. — — — xenon-a (Power Mac G5); xenon-sd (Shiva/DD.9)
January 2005 1242.0 2.0.1242.0 Controllers inactive at startup; Alpha R300 dropped; R420 required; compiler bug C10001. — — — xenon-a (Power Mac G5); xenon-sd (Shiva/DD.9)
January 2005 1242.1 2.0.1242.1 Internal/External. Bug fixes. — — — SDK QFE
February 2005 1315.0 2.0.1315.0 Internal/External. Bug fixes. — — — xenon-a; xenon-sd; xenon-r1 (WN1)
February 2005 1329.0 2.0.1329.0 Internal/External. Bug fixes. — — — xenon-a; xenon-sd; xenon-r1 (WN1)
February 2005 1332.0 2.0.1332.0 Main branch external. Introduces XSession API, marketplace + quick voice chat. — — — xenon-a; xenon-sd; xenon-r1 (WN1)
March 2005 1418.0 2.0.1418.0 Internal/External. Bug fixes. — — — xenon-r1 (WN1)
March 2005 1419.0 2.0.1419.0 Internal/External. Bug fixes. — — — xenon-r1 (WN1)
March 2005 1423.0 2.0.1423.0 Internal/External. Bug fixes. — — — xenon-r1 (WN1)
March 2005 1427.0 2.0.1427.0 Internal/External. Bug fixes. — — — xenon-r1 (WN1)
March 2005 1428.0 2.0.1428.0 Live BVTs (Rich Presence, Session); HUD flicker fix; bug fixes. — — — xenon-r1 (WN1)
March 2005 1502.0 2.0.1502.0 15xx branch; pushed as 1428 same day. — — — xenon-r1 (WN1)
March 2005 1429.0 2.0.1429.0 XSession API fixes; bug fixes. — — — xenon-r1 (WN1)
March 2005 1430.0 2.0.1430.0 Bug fixes. — — — xenon-r1 (WN1)
March 2005 1504.0 2.0.1504.0 Bug fixes. — — — xenon-r1 (WN1)
March 2005 1433.0 2.0.1433.0 Bug fixes. — — — xenon-r1 (WN1)
March 2005 1434.0 2.0.1434.0 Main branch external release. — — — xenon-a (Power Mac G5); xenon-sd (Shiva/DD.9); xenon-r1 (WN1)
March 2005 1508.0 2.0.1508.0 Internal/External. — — — xenon-r1 (WN1)
April 2005 1510.0 2.0.1510.0 Internal/External. — — — xenon-a; xenon-sd; xenon-r1 (WN1)
April 2005 1515.0 2.0.1515.0 Internal/External. — — — xenon-a; xenon-sd; xenon-r1 (WN1)
April 2005 1522.0 2.0.1522.0 Internal/External. — — — xenon-r1 (WN1)
April 2005 1529.0 2.0.1529.0 Internal/External. — — — xenon-r1 (WN1)
April 2005 1538.0 2.0.1538.0 Main branch external release. — — — xenon-a; xenon-sd; xenon-r1 (WN1)
April 2005 1610.0 2.0.1610.0 Internal/External. — — — xenon-r1 (WN1)
May 2005 1615.0 2.0.1615.0 Internal/External. — — — xenon-r1 (WN1)
May 2005 1616.4 2.0.1616.4 Planned manufacturing factory kernel for WN1 (EV3/EV4, typically Xenon FAB G). — — — xenon-r1 (WN1)
June 2005 1746.1 2.0.1746.1 Main branch external release; many SDK/PIX fixes; early Live camera kits. — — — xenon-r1 (WN1)
July 2005 1810.5 2.0.1810.5 Manufacturing factory kernel for EV5/DV samples. — — — xenon-r1 (WN1)
July 2005 1814.0 2.0.1814.0 Internal/External. — — — xenon-r1 (WN1)
July 2005 1831.0 2.0.1831.0 Internal/External. — — — xenon-r1 (WN1)
July 2005 1834.0 2.0.1834.0 Internal/External. — — — xenon-r1 (WN1)
July 2005 1836.0 2.0.1836.0 Internal/External. — — — xenon-r1 (WN1)
August 2005 1838.0 2.0.1838.0 August preview; major kernel for beta hardware. — — — xenon-r1 (WN1); xenon-r2 (WN2)
August 2005 1838.1 2.0.1838.1 Memory page size default 64KB; marketplace updates; side tools; avatars. — — — xenon-r1 (WN1); xenon-r2 (WN2)
August 2005 1839.2 2.0.1839.2 Manufacturing factory kernel for DVT and final Xenon dev hw. — — — xenon-r1 (WN1); xenon-r2 (WN2)
August 2005 1846.0 2.0.1846.0 Internal/External. — — — xenon-r1 (WN1); xenon-r2 (WN2)
August 2005 1849.0 2.0.1849.0 Internal/External. — — — xenon-r1 (WN1); xenon-r2 (WN2)
August 2005 1852.0 2.0.1852.0 Internal/External. — — — xenon-r1 (WN1); xenon-r2 (WN2)
August 2005 1853.0 2.0.1853.0 Internal/External. — — — xenon-r1 (WN1); xenon-r2 (WN2)
August 2005 1856.0 2.0.1856.0 Internal/External. — — — xenon-r2 (WN2)
August 2005 1859.0 2.0.1853.0 Internal/External. — — — xenon-r2 (WN2)
August 2005 1861.0 2.0.1861.0 Internal/External. — — — xenon-r2 (WN2)
August 2005 1863.0 2.0.1863.0 Internal/External. — — — xenon-r2 (WN2)
August 2005 1864.0 2.0.1864.0 Internal/External. — — — xenon-r2 (WN2)
August 2005 1865.0 2.0.1865.0 Internal/External. — — — xenon-r2 (WN2)
August 2005 1868.0 2.0.1868.0 Internal/External. — — — xenon-r2 (WN2)
August 2005 1869.0 2.0.1869.0 Internal/External. — — — xenon-r2 (WN2)
August 2005 1870.0 2.0.1870.0 Internal/External. — — — xenon-r2 (WN2)
August 2005 1870.2 2.0.1870.2 Internal/External. — — — xenon-r2 (WN2)
August 2005 1871.0 2.0.1871.0 Internal/External. — — — xenon-r2 (WN2)
August 2005 1872.0 2.0.1872.0 Internal/External. — — — xenon-r2 (WN2)
August 2005 1873.0 2.0.1973.0 August Final XDK; main branch external; adds XbGameDisc sidecars USB 2.0; drops beta preview hw. — — — xenon-r2 (WN2)
August 2005 1875.0 2.0.1875.0 Internal/External. — — — xenon-r2 (WN2)
August 2005 1880.0 2.0.1880.0 Internal/External. — — — xenon-r2 (WN2)
September 2005 1888.0 2.0.1888.0 Main branch base kernel. — — — xenon-r2 (WN2)
September 2005 2099.1 2.0.1888.0 Internal/External. — — — xenon-r2 (WN2)
September 2005 2099.2 2.0.1888.0 Fix shader issues present in 2099.1. — — — xenon-r2 (WN2)
September 2005 2099.3 2.0.1888.0 Fixes GPU hang; accurate DVD emulation; SDK fixes. — — — xenon-r2 (WN2)
September 2005 2099.4 2.0.1888.0 Stability fixes; symbols updated; title libs unchanged vs 2099.3. — — — xenon-r2 (WN2)
September 2005 2099.6 2.0.1888.0 Fixes triangle clipper GPU hang; tool fixes. — — — xenon-r2 (WN2)
September 2005 2099.7 2.0.1888.0 Updates emulator firmware to 6D; multiple tool fixes. — — — xenon-r2 (WN2)
September 2005 2099.9 2.0.1888.0 Adds heap runtime checks; several tool fixes. — — — xenon-r2 (WN2)
September 2005 2112.0 2.0.2112.0 Internal/External/TakeHome. — — — xenon-r2 (WN2)
October 2005 1893.0 2.0.1893.0 Internal/External. — — — xenon-r2 (WN2)
October 2005 1895.0 2.0.1895.0 Internal/External. — — — xenon-r2 (WN2)
October 2005 2099.11 2.0.1888.0 QFE: fix hang on IXMediaXmvPlayer::Release. — — — xenon-r2 (WN2)
October 2005 2135.2 2.0.1888.0 / 2.0.2135.0 Main branch external release. — — — xenon-r2 (WN2)
November 2005 1898.0 2.0.1898.0 Internal/External. — — — xenon-r2 (WN2)
November 2005 2237.0 2.0.2237.0 Internal/External. — — — xenon-r2 (WN2)
November 2005 2240.0 2.0.2240.0 Like 2241 but minus one bugfix; spindle limited to 8x for testing. — — — xenon-r2 (WN2)
November 2005 2241.0 2.0.1888.0 / 2.0.2241.0 Internal/External/TakeHome. — — — xenon-r2 (WN2)
November 2005 2242.0 2.0.2242.0 For testing spindle speed 8x limit. — — — xenon-r2 (WN2)
November 2005 2243.0 2.0.2243.0 Validate 2241→2241+ updates work. — — — xenon-r2 (WN2)
November 2005 2417.0 2.0.1888.0 / 2.0.2241.0 Internal/External. — — — xenon-r2 (WN2)
November 2005 2417.4 2.0.1888.0 / 2.0.2255.0 System update for red systems; Guide improvements; better error messaging; NL Live config tweaks. — — — xenon-r2 (WN2)
November 2005 2502.0 2.0.2502.0 Internal/External. — — — xenon-r2 (WN2); zephyr-r1 (WN2) with Zephyr SMC
November 2005 2510.0 2.0.2510.0 Internal/External. — — — xenon-r2 (WN2)
November 2005 2511.0 2.0.2510.0 Internal/External. — — — xenon-r2 (WN2)
December 2005 1900.0 2.0.1900.0 19xx SB bootloader for IFX memory. — — — xenon-r2 (WN2)
December 2005 1901.0 2.0.1901.0 19xx SB bootloader for IFX memory. — — — xenon-r2 (WN2)
December 2005 1902.0 2.0.1902.0 19xx SB bootloader for IFX memory. — — — xenon-r2 (WN2)
December 2005 2255.0 2.0.2255.0 Internal/External. — — — xenon-r2 (WN2)
December 2005 2527.0 2.0.1888.0 / 2.0.2527.0 Internal/External. — — — xenon-r2 (WN2)


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