High risk. Modding GTA IV on PS3 (CFW, mod menus, modified saves) violates Rockstar's EULA and Sony's PSN Terms of Service.
Ban Vectors
Rockstar Social Club: Detects modified game memory, impossible stats, injected vehicles → Account suspension/ban.
PSN System Software: CFW (HEN, Rebug, Evilnat) is detectable via system call checks; Sony issues console bans (error 8002A224) in waves.
Multiplayer Reports: Other players report god mode, spawning, money drops → Manual review → Ban.
Safer Alternatives
Single-Player Mods on CFW (Offline Only): Disable network (Airplane Mode) before launching. Use mods like Simple Native Trainer for SP fun. Never sign in to PSN.
Private Community Servers: Projects like GTA IV: Multiplayer (IV:MP) or RAGE:MP on PC. PS3 has no active private server scene.
PC Version: Modding is supported (OpenIV, ScriptHookV) and Rockstar tolerates SP mods. Buy on Steam/Epic (~$5 sale).
If You Already Modded on PSN
Delete modded saves.
Reinstall official firmware (OFW) via recovery mode.
Create new PSN account; old one likely flagged.
PS3 modding in 2024 is a cat-and-mouse game; assume any PSN connection on CFW carries ban risk.