iPhone What is the newest iOS that I can upgrade iPhone 4 to and jailbreak it?

[ka-spot]

And how to do it keeping my data (quick steps) ?

My iPhone 4 currently uses 5.1.1 (9B206). I don't remember what JB is used.

P.S.
I don't want to plug my phone to PC every time I need restart and my phone is factory unlocked, never locked or whatever is called

 

[hafr]

And how to do it keeping my data (quick steps) ?

My iPhone 4 currently uses 5.1.1 (9B206). I don't remember what JB is used.

P.S.
I don't want to plug my phone to PC every time I need restart and my phone is factory unlocked, never locked or whatever is called

You're out of luck, you can't upgrade your phone if you want to jailbreak it.

 

[ka-spot]

You're out of luck, you can't upgrade your phone if you want to jailbreak it.

Awesome! Thanks.