iPhone 4 iOS 5.1 Unlock?

Discussion in 'iPhone, iPod & iPad' started by FlashX007, Jun 19, 2012.

  1. FlashX007

    FlashX007 GBAtemp Maniac

    May 3, 2009
    United States
    Hey I recently jail broke 2 iPhones. I want to unlock both. They are both iPhone 4 8GB with 5.1.1 iOS. I am wondering what unlocking choices are available.

    My current baseband for both of the phones is 4.12.01 I believe correct me if I'm wrong.

    Also if it's unable to do so should I downgrade?
  2. Dialexio

    Dialexio GBAtemp Advanced Maniac

    Mar 14, 2009
    United States
    You can't use ultrasn0w, since that requires baseband 01.59.00. (And no, you can't downgrade your baseband past 04.12.01.) The GEVEY Ultra and Rebel Sim card don't boast compatibility with baseband 04.12.01, so that's out of the question as well.

    The only available option appears to be the "official" IMEI unlock, where you give a website some money and your IMEI for entry into Apple's list of unlocked iPhones. (Make sure the website is trustworthy, since your IMEI is pretty sensitive information… On the top of my head, I know http://cutyoursim.com/ is legit.) This "official" unlock is pricey but it lasts forever, regardless of jailbreak status.
  3. anbinal
    This message by anbinal has been removed from public view by p1ngpong, Nov 27, 2012.
    Nov 22, 2012
  4. dhoom 2
    This message by dhoom 2 has been removed from public view by p1ngpong, Jun 12, 2013.
    Jun 5, 2013