restoring firmware

Discussion in 'Jailbreaks and iOS Hacks' started by tdillon, Nov 9, 2010.

  1. tdillon macrumors newbie

    Nov 9, 2010
    Ok, so I am trying to jailbreak, unlock and use my iphone 3g on the tmobile network. My husband tried to help me and he upgraded the firmware to 4.1 which (apparently) is unbreakable. So, my question is is there a way to revert the firmware to 3.0? I have spend the better part of 3 days doing this and right now I am just wishing I would have purchased an unlocked phone. I have a mac and a pc so either format is ok, although my iphone seems to be responding more favorably to the mac.
  2. goobot macrumors 603


    Jun 26, 2009
    long island NY
    Can't downgrade bb so just stay on the firmware you are on now until an unlock which should be out in around a month. If you bought a 3G like me on or around when they first came out you can downgrade the bb. Search fuzzy band in cydia, install it, and it will tell you if you can. If you can't just stay on your current firmware.
  3. Myzhi macrumors 6502a


    Dec 15, 2009
    Upgrading to 4.1 firmware also upgrades the baseband to 5.14. Currently, that baseband can't be unlock to use with different carriers, like T-Mobile. If the 3G iPhone has 5.08 bootloader, there is hope. | Jailbreak your iPod touches and iPhones
    Use F0recast (link ^^^) and see if you have 5.08 bootloader =>use Fuzzyband to downgrade to unlockable baseband.

    If you do, JB with Redsn0w which adds Cydia. In Cydia, install Fuzzyband to downgrade the baseband, and then, install Ultrasn0w to unlock so you can use it with T-mobile.

    If you don't, you will need to wait for possible 5.14 baseband unlock. As to when, nobody knows. Latest rumor is shortly after 4.2 firmware is released.
  4. Applejuiced macrumors Westmere


    Apr 16, 2008
    At the iPhone hacks section.
    You're sol for now. Your husband did a good one this time:)
    You cannot unlock just jb it and use it only with AT&T sims.

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