Prestige, count to 3, pull ethernet cable, eject disk, turn off at the front, switch off and on at the back, insert ethernet cable, and re-insert disk which will turn ps3 back on.
Just did this on my sons account he's now 10 prestige.
I know its a bit long winded but it's worked every time.
I tried the first way and only got to prestige 3 on my own account, now ive got to get to 65 again to do it.
@ zZEROZz
Originally posted by another user
There are rumors saying TreyArch will ban ur PSN if they find ridiculous 10p 65's with outrageous playing time so dont do it when u are below 1 day or 4 days for that matter.
Would'nt they go by your XP points aswell? There must be a minimum amount that you need to be 10 prestige.