Custom IOSX rev20 changelog:
http://pastie.org/1068644
And for those too lazy to click:
QUOTE- Added support to IOS36, IOS53, IOS55, IOS56, IOS61 and IOS80.
- Updated IOS37, IOS38 and IOS57 bases.
- Installer supports GameCube pads.
- Installer supports custom slots.
- Installer network code improved.
- IOS modules timers fixed.
- MLoad module improved (new calls and fixes).
- FAT module rewritten (using FatFs).
- SDHC module improved (buffers and cache).
- DIP plugin improved.
- ES plugin added.
- FFS plugin improved.
- IOS reload block implemented (only works correctly with DVD titles).
- Identified titles cannot use custom modules.
- NAND emulator improved (fixes and usage of new FAT module).
- MEM2 protection disabled by default.
- AHBPROT flag set to allow HW access from PPC.
- Easter egg added.
- Miscellaneous improvements and fixes.