I have an iphone 3gs running on 4.1 software and has the 06.15.00 baseband ( modem software).
I need to upgrade my phone to the latest 5.1.1 software and jailbreak it.At the same time i have to preserve my iPhone unlock (my phone is not factory unlocked and was previously locked to a network)
how do i go about this ??
>>> Iphone upgrade and unlock help?