I've watched joltz and saw that he had a mod option inside his main menu where he could check or uncheck mods he wants active. I've done some research but I can't
Borderlands 2 Save File Editor by Gibbed » MentalMars
How To Mod Borderlands 2 Ps3 & Best Hacks In 2023
OUTDATED | Tutorial: How to mod Borderlands 2 on PS3 - YouTube