MW3 Invisible hack

hey, So I was playing MW3 (on the PS3 obviously) with my friend and we did a 2v2 match, so we started a domination on erosion. then when we where playing a host migration happened and 1 of the enemies became invisible, I only saw his name and I dont know how I did it but I made 1 hitmarker. I asked him how he did that and he didnt respond.

So my question is : how do you get it, where can I get it, is it free and how does it work?

my PS3 is not jailbroken or rooted or anything in that direction...

thank you in advance

If you want to send me a message on psn my name is Wexflex

You need a Jailbreak, you can jailbreak your Ps3 with E3Flasher(~75$-100$) if you have the right one. Then you got a jailbroken Ps3 you have to switch/change some files.