How to hack myplayer in nba 2k11?

i've seen several ways to hack my myplayer, but none of it seems to work. One that i had a particular interest in was the one with rendering the hex and using modio on a flash drive. For some apparent reason, when i plug the flash drive back into my xbox, the skill points are not rendered, only remaining the same. Can someone provide me valuable insight on how to do this "hack" or provide me other alternative ways to hack my myplayer