Pour Go! sudoku
Replace the prx files with those from another 1.5-working-game
To get the game to save we need to HEX edit the BOOT.BIN file located in PSP_GAME\SYSDIR
So open up any decent hex editor I use Hex workshop pro (http://www.bpsoft.com)
1.Please note that your BOOT.BIN must be the original 5.49 MB (5,757,964 bytes)
2.Change: 59A1 to 0000, 7915 to 0000, 560C to 0000, D564 to 0000.
3.Done, hit save.
rebuild the iso with VcdromX (it will not workt with umdgen!)
(MAXCONSOLE source)