decrypt these prx files with Decrypt 2.00 PRX (psardump mod) version 1.0.2
PSP_GAME\USRDIR\SUDOKU\PRX\KMODULE
AUDIOCODEC.PRX
MPEGBASE.PRX
SC_SASCORE.PRX
VIDEOCODEC.PRX
PSP_GAME\USRDIR\SUDOKU\PRX\MODULE
LIBATRAC3PLUS.PRX
MPEG.PRX
PSMF.PRX
To get the game to load we need to HEX edit the BOOT.BIN file located in PSP_GAME\SYSDIR
1.Please note that your BOOT.BIN must be the original 892 KB (914,149 bytes)
2.Goto offset 00099C70. Change: 59A1 to 0000, 7915 to 0000, 560C to 0000, D564 to 0000.
3.Done, hit save.
Before
00099C70 59A1 7915 560C D564 51AF 6C13 2D6B D5E2
After
00099C70 0000 0000 0000 0000 51AF 6C13 2D6B D5E2
If you cannot find the offset try instead to do a find for the hex value 59A17915560CD564.
delete update folder in PSP_GAME\SYSDIR
voila c'est compliqué mais bon sinon essait de recuperer un iso deja modifier c'est legal puisque tu a l'umd.