http://wiki.gbatemp.net/wiki/index.php?tit...patibility_List what exactly is this GCOS ? GameCube Operating System I assume 1) I googled 'custom BIOS for GC and later Wii' (?) .. it's possible to put custom BIOS on a Wii ? 2) this is 100% only modchip or software too ? 3) it's now obsolete ? for soft modding to use GC backups - only cMIOS + Backup launcher ? or this still works too ? 4) compatibility is similar to cMIOS (which is lower then with a modchip) ?