no but i recommend this awesome website that gives you 10th and 15th Lobbies
c2gnation.com
You need a JTAG.
yes
For Xbox, you need a JTAG, for PS3, you need a Jailbroken PS3.
No you can not enter a 10th prestige lobby with a j-tag... if you would of did a j tag after a 10th prestige lobby then yes but what i would do is deleter your account but then create a new one, get into a 10th p-lobby then transfer the same jtag over again... ive had to do the same all you do is put your j-tag into your documents on your computer or a 10$ flash drive disk.
To start a challenge lobby a JTAG is needed a Jtag is a hacked/modded xbox it ranges from $150-$500
Jtags give you all the tittles and embalebs + all guns, attachment, and camos its legit man it even gets you 10th prestige
Some times people have free ones but most are $20
They host they modded lobbies with a diffrent xbox called a jtag. It is an that can run homebrwed unsigned code. Basically it is a hacked xbox 360 which gives you full control over your xbox. You can then mod games like MW2 and Halo.
You can do legit which is just play tons of search and destroy or you can get an jtag (which is hacking) and cheat so you have anything.
Don't buy a pre-jtagged Xbox. Jtag an Xbox yourself, it's much cheaper. If you're buying a jtag to host 'CoD Lobbies' then don't bother as you will be wasting your money.
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.
You cannot do a tenth prestige lobby with a usb and because of the update the jtag wont be hosting 10 prestige lobby online