unlocked 3.1.2 to 4.1
anyway I can update my unlocked iphone 3.1.2.. to the new 4.1 firmware. without losing my unlocked or my service??
If your phone is officially unlocked, you have nothing to worry about. If your phone was hacked to unlock it, it will be locked back to the carrier it was originally locked to if you attempt to restore or update software on your phone.