(adsbygoogle = window.adsbygoogle || []).push({}); Help please GTA 5 Online What firmware is needed for PS3 To install a mod menu, I from Russia I have bad English

You can modify any game on any custom firmware version. Though, if you are on a firmware lower than the game's release version, you will need to patch the game in order to get it to run. (I think GTA 5 requires version 4.46 or later? I'm probably wrong. xD)

If you're asking whether or not you can modify this game on OFW, (offical firmware) the answer is no.