| 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 probably to make error 001 appear in older games, as a lot of games use IOS21.
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 older versions of DataChk, a factory title.
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
|
