IOS21
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| IOS21 | |
 | |
| Technical info | |
|---|---|
| Type | Common IOS |
| Status | Active |
IOS21 is most commonly used by third-party games. It also contains a copy of the NAND Boot Program in content 1 in some versions, identical to the one in IOS15; this was most likely to apply an urgent patch to the Internet Channel.
It probably had the connection fixes advertised for 2.2. Many games such as Wii Sports were also rereleased under this IOS with a newer strap screen, probably in response to TVs getting smashed.
This IOS was used by some versions of DataChk.wad, a factory title.
Due to the numerous rereleases that previously used IOS9 and the similar version number, it is possible that this IOS is based on IOS9 as opposed to IOS17, although nothing has been looked at in detail.
Version history
| Version | Signing bug? | /dev/flash access? | ES_Identify? | STM Release Exploit? | STM IOCTL overflow? | SDI register index bug? | Notes |
|---|---|---|---|---|---|---|---|
| v512 | Yes | Yes | Yes | Yes | Yes | Yes | Lowest version released, but not the first release. Released on Mario & Sonic at the Olympic Games in November 2007. |
| v514 | Yes | Yes | Yes | Yes | Yes | Yes | First release; 2.2 update |
| v515 | Yes | Yes | Yes | Yes | Yes | Yes | Added Broadway binary, updated Starlet binary |
| v516 | Yes | Yes | Yes | Yes | Yes | Yes | Removed Broadway binary. The Starlet binary is identical to v514, but the build tag is newer. |
| v517 | Yes | Yes | Yes | Yes | Yes | Yes | Added back the Broadway binary, and updated the Starlet binary (different from v515 and v516) |
| v522 | No | No | No | Yes | Yes | Yes | |
| v525 | No | No | No | No | Yes | Yes | |
| v782 | No | No | No | No | Yes | Yes | |
| v1038 | No | No | No | No | Yes | Yes | |
| v1039 | No | No | No | No | Yes | Yes | |
| v1295 | No | No | No | No | Yes | Yes | Only found on vWii and newer RVL-101 units. |
| v26895 | No | No | No | No | Yes | Yes | Only found on Wii mini |
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