upgrade to 5.1.1 while preserving baseband

Discussion in 'Jailbreaks and iOS Hacks' started by ineediphone, Aug 8, 2012.

  1. ineediphone macrumors newbie

    Aug 8, 2012
    Hey everyone, i have an iphone 4 jailbroken with version 4.1 with modem firmware 02.10.04. i want to upgrade to ios 5.1.1 while keeping the firmware the same so it remains unlocked. i used sn0wbreeze and redsn0w and even iREB, but after getting into pwned DFU mode, and opening itunes and shift+restore and clicking the custom ipsw, itunes tells me an error 1601 or 1602 has occured. can someone help me with this? any help is appreciated. thanks:confused:
  2. TriJetHero macrumors 601


    Oct 13, 2010
    Your host file is still pointing to Cydia instead of apple.

    Connect phone to usb
    open TinyUmbrella
    In the advanced tab UNcheck Set host to cydia.
    Close TU
    On a windows machine restart computer

    Now try again with your custom firmware and pwned-DFU
  3. ineediphone thread starter macrumors newbie

    Aug 8, 2012
    the set hosts to cydia box is already unchecked, and if i were to try and check it, the box is grayed out, i cant do anything to it, any suggestions?
  4. ineediphone, Aug 8, 2012
    Last edited: Aug 8, 2012

    ineediphone thread starter macrumors newbie

    Aug 8, 2012
    actually i got it to work, and the baseband stayed the same, and while trying to jailbreak it, its now stuck at the apple logo, any suggestions?
  5. PsstGreek macrumors 68040


    Oct 21, 2010
    Tampa Bay
    Did you follow the countdown correctly? Just try again.

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