Originally posted by hard
Ok im a bit of a noob to this lol so basically the reason for having two is because you have your jailbroken one on 3.55 where you mod the patch and stuff, then you transfer that file to the 4.10 where you actually play?
Correct, data transfer. But people also have 3.55's for more than just COD hacking, they use them for homebrew, linux, pirated games, etc. So technically, no, that's not the only reason for owning two.
Originally posted by hard
And also does only the 3.55 have to be jailbroken or does both have to be jailbroken?
No, only 3.55 has to be jailbroken. It is impossible to jailbreak 4.10, because, as of now, one doesn't exist.
Hope this helps.