Yoshihiro’s Game Decrypter has been updated to v2, adding support for even more games. For those looking to play OFW 5.55 and 6.00 games on custom firmwares 5.00 M33-6 and 5.50 GEN-B2, this is the homebrew application for you. In addition to adding compatibility for just about every OFW 5.55 requiring game, Yoshihiro also fixed a bug in Marvel Ultimate Alliance 2.

Keep your eyes on that list of compatible games being maintained at GBAtemp to make sure your game is compatible, and how to get it working if it isn’t. If you need help getting the program to work, there is a nice tutorial on our previous post.

Download: Yoshihiro’s Game Decrypter v2

From the README:

hi guyz this tool is here for let you use your original game backup
on CFW 5.50 gen B-2 .

how i can use this tool ?
1 :lets go first you need to install the GameZDecryptZ folder in your X:PSP/GAME folder
2 : Open you iso with UMDGEN 4
3 : Go to File>File List>Export
4 : Save it as Filelist.txt
5 : Extract the EBOOT.BIN with UMDGEN4 in PSP_GAME/SYSDIR
6 : put your EBOOT.BIN extracted from UMDGEN PSP_GAME/SYSDIR and put it on root of your memory stick
7 : now you can boot game decrypter now you can press X 5 seconds later it's done
8 : connect your usb cable check on root of your memory stick you have a new folder called decryptor
9 : copy the eboot.bin from the decryptor folder inside umdgen
10 : Go to File>File List>Import
11 : Choose Filelist.txt
12 : Select YES to forcing LBAs, then Save
13 : REbuild your ISO.

Voilà

Fix: testingtool support for Marvel ultimate alliance 2

Enjoy it Yoshihiro

Update: Fixed link to compatible games list, found a better one.