You'd have to get somebody else to do it buddy. You can only do that kind of thing with CFW.

As Matthew mentioned above, if you want to boost stats you can get someone to do that for you in the marketplace. If you want actual hacks, you'll need a CFW flashed (which requires the flasher if and a non-super-slim PS3). If you do plan on doing that... use the 4.65 Cobra (since CCAPI does not support 4.66 atm). Then use PSNSpoof to spoof to 4.66, Disable CFW before going online, use PSNninja to delete history, etc. Then you should be fine

The flasher is a tad expensive... So see if someone on craigslist will do it for you. Just make sure they don't steal your console ID for their own use ;P. If you're that paranoid... buy the flasher. Just make sure you have lots of patience as the flasher might require some adjusting to get a proper read/write.

Hope this helps.

You cannot modify the game without a Custom Firmware, as mentioned above.
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