cool it works!
not the game launching
just upgraded to 4.01 m33-2 on a phat
went to the 1.5 ir shell
EBOOT LAUNCHING FOR 3xx and 1.5 works
MP3 PLAYBACK works
ISO/CSO (backup) does not work probably cause there is no patch for that.. well all it does is launches the XMB
UMD does not work for some reason... tried both EBOOT.bin and BOOT.bin both got different errors
800200D9 for BOOT.BIN
FFFFFED3 for EBOOT.BIN
i dont think i need those features... you know.. they can be launched from xmb
remember this is from phat with 1.5 addon to access 1.5 irshell
so i guess this is safe to say i could upgrade to 4.01 m33 forever?