Updated to 4.2 w/ d2pro9 chip. NTSC backups work, all other regions backups show as invalid disc. Looks like region freeing via mod chip is gone. Discs that were brick blocked also don't work. Hope mod chip companies release an update to fix this. Haven't tried booting backups through gecko os yet. BTW is loading of PAL ISO's through USBloader working for anyone on ntsc wiis?