To do a 10th prestige lobby or a 10th lobby, is very risky considering Microsoft and sony are really cracking down on hackers and rule breakers. But how you do it is you find someone that has hacked their xbox / ps3 and you enter a lobby they made and my doing a certain thing, like a headshot or somthing I'm not quiet clear on how it works, you may just need to enrter it, you get 10th prestige or a certain level or challenge unlocked or for that matter a gun. Its whatever the hacker set for the reward.
-NOTE: I DO NOT recommend doing this, Microsoft and sony have ways of detecting who has used a 10th lobby and YOU WILL be banned if caught doing this which means you will need a new Xbox or PS3 because sony and Microsoft make it so you can't go online with the hacked system once they catch you.
Have someone invite you to one.
Get into a Tenth Prestige lobby or pick it up off the ground
Prestige 10 times funnily enough
HACKERS
you hack dumbbutt
lol i play MW2 and i joined a prestige lobby...most kids that know how to do it wont tell you. but good luck trying to find out
you have 2 send a certain message and it unlocks all tittles emblems and golden desert eagle
Www.werapekids4free.com
Buy it.
get the certain number of xp 10 times
As far as I know, no one has reached the 10th prestige yet. The highest prestige I have seen is 4.
There aren't too many ways to hack to 10th prestige anymore. Assuming you are talking about Call of Duty: Modern Warfare 2, you will probably only be able to join a modded JTAG lobby (360), or earn it outright and respectfully. I do not believe there are any prestige hacks left on the PS3 though.