Adding Perks to Fallout 3/New Vegas via USB on Xbox 360: Impossible

Impossible on Stock Xbox 360.

• Closed System: Xbox 360 does not allow unsigned code execution or file modification via USB
• Save Encryption: Saves signed per Console ID + Profile ID. Editing on PC (Horizon, Modio) breaks signature → "Corrupted Save" on console
• Perks are Code: Perks defined in .esm/.esp master files (Game Data), not Save Data. Cannot add perks via save editing; need a Plugin (Mod) loaded by the engine

PC Only Solutions

• Console Commands: player.addperk <PerkID> (Requires ~ console)
• Mods (Nexus Mods / Bethesda.net):
  • Fallout 3: FCO, Project Beauty, Level Up Menu Overhaul
  • New Vegas: Project Nevada, JSawyer Ultimate, Trait/Perk Pack
• GECK (Editor): Create your own perk mods

Xbox 360 Modded (RGH/JTAG)

Only on hardware-modded (RGH/JTAG) console can you:

1. Extract game assets
2. Inject modified .esp/.esm files (Mods)
3. Run player.addperk via in-game console (dev kit kernel)

Risk: Instant Xbox Live Ban. Offline only.