You can direct your question in general help, but your not providing enough info insertion of mods have different methods per game per region and is this a downloaded game game disc what it the exact game some games have a few versions like GTA , what mods are you trying to install , and there may be additional programs you need to install mods, do you have a jailbroken playstation is it spoofed to go online , you have a great common question that many have but are not providing enough information to get the answers you seek or may not even be asking in the correct place.
CHECHA01 FAT 80gb 3.21 OFW to kmeaw 3.55 CFW>REBUG 4.30.02 >REBUG/SPOOFED 4.41
CHECHE01 FAT 80gb updated OFW
"Kick back, Liberty City is your playground, only your playmates ain't so nice. Have fun out there."- Freemode