1. dtm996c5's Avatar
    if i want to unlock 4.1 firmware version of the iphone 4 gsm, which firmware could i upgrade to? i have never saved my shsh....
    2011-06-07 05:01 AM
  2. daytonaviolet's Avatar
    if i want to unlock 4.1 firmware version of the iphone 4 gsm, which firmware could i upgrade to? i have never saved my shsh....
    depends..

    if it was originally 4.1 from apple, then its already baseband 2.10.04. which means there is no current software unlock. your best bet is to use a hardware unlock like the gevey sim tray to unlock. the only iphone4 software unlockable baseband is 1.59 which was only available with firmware 4.0.

    but if it was originally a 4.0 ios with 1.59 then was upgraded to 4.1 with a preserved 1.59 baseband, then you can update it again to any higher level ios firmware and just preserve the bandband again at 1.59.
    2011-06-07 05:57 AM
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