IOS28
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| IOS28 | |
 | |
| Technical info | |
|---|---|
| Type | Common IOS |
| Status | Active |
IOS28 is the first IOS to be split into multiple modules, each its own ELF ARM binary, rather than all of IOS being part of a single monolithic binary. Its ES module includes ioctls that retrieve shared contents, probably for the purpose of quickly loading IOS modules. Modules are also now tagged with $IOSVersion dates, since the build tag can no longer completely summarize the IOS. Older IOSes were later given module-specific $IOSVersion tags as they were updated.
This IOS also uses a different range of memory, so it must clear memory differently. Because IOS22 and below did not do this, IOS28 also clears it if one of those IOSes is reloaded to.[1]
This also appears to be the first IOS to support /sys/disc.sys; this probably means Metroid Prime 3: Corruption requires special privileges.
Titles using this IOS
The only game that uses it is Metroid Prime 3: Corruption, and this IOS was included in the update partition of the disc.
Version history
| Version | Signing bug? | /dev/flash access? | ES_Identify? | STM Release Exploit? | STM IOCTL overflow? | SDI register index bug? | Notes |
|---|---|---|---|---|---|---|---|
| v1288 | Yes | Yes | Yes | Yes | Yes | Yes | Not available on NUS. |
| v1292 | No | No | No | Yes | Yes | Yes | |
| v1293 | No | No | No | No | Yes | Yes | |
| v1550 | No | No | No | No | Yes | Yes | |
| v1806 | No | No | No | No | Yes | Yes | |
| v1807 | No | No | No | No | Yes | Yes | Updated WL and NCD (4.3rev03) |
| v2063 | No | No | No | No | Yes | Yes | Only found on vWii and newer RVL-101 units. |
| v27663 | No | No | No | No | Yes | Yes | Only found on Wii mini |
References
↑ 1. https://github.com/dolphin-emu/dolphin/blob/master/Source/Core/Core/IOS/IOS.cpp
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