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Redsn0w 0.9.14b2 Supports More iPhone 3G/3GS NOR Chips for Baseband Downgrade to 5.13.04

Redsn0w 0.9.14b2 Supports More iPhone 3G/3GS NOR Chips for Baseband Downgrade to 5.13.04

By July 5, 2012 Fix 38 Comments
(Last Updated On: June 24, 2020)

If you’re one of the many iPhone 3G or 3GS users who are not able to downgrade from 6.15.00 to 5.13.04 due to different variation of NOR chips used, the latest redsn0w might do the trick.

UPDATE: If you have an iPhone 3G or 3GS locked to AT&T, get the official unlock here.

In case you just found out about this, MuscleNerd came out with a method to downgrade baseband 6.15.00 to 5.13.04 that allows unlocking with ultrasn0w and restore the GPS functionality on iPhone 3G and 3GS. The previous version of redsn0w failed to downgrade many iPhone 3G/3GS’ baseband as it only supports the most ‘prevalent’ NOR chip. This latest version should address that issue.

I won’t need to write all the details here because you might have attempted to downgrade your iPhone 3G or 3GS already. However, do note that some of the steps have been slightly revised (thanks to Unlockboot.com for this):

  1. Connect your iPhone in normal mode, then click “Jailbreak” after redsn0w identifies its model and BB version (you needn’t pre-select the IPSW anymore).
  2. Choose the “Downgrade from iPad baseband” option (you needn’t worry about de-selecting Cydia anymore).
  3. Do a controlled “slide to power off” shutdown of your phone and proceed through the normal DFU ramdisk steps.

Once your baseband has been downgraded to 5.13.04, it’s highly recommended that you reinstall mobile substrate and ultrasn0w.

Those with iPhone 3GS made after week 28 of 2011 should not make any attempt to flash the baseband to 6.15.00 in hoping to downgrade to 5.13.04 because this will brick your baseband chip!

Download Redsn0w 0.9.14b2 for Windows
Download Redsn0w 0.9.14b2 for Mac

Good luck and let us know if it works for you this time!

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About Author

Joe the Device Unlock and Activation Specialist

Joe Wang studied electronics engineering and is a specialist in Apple and Android products. He has been fixing iPod and iPhone since 2008.

38 Comments

    « Older Comments
  1. 4rukh

    haahahahahahaha success in downgrading bb ilove u man ……..

    Reply
  2. Arkangel0942

    Hello
    I have a 3G iphone i already did everyting when i downgrade from 6.15 it becomes 5.14.04 Never came to 5.13
    When i go to settings they appear in grey no wifi and no Bluetooth
    After goes to bb 6.15 everything work fine except GPS . I already try this 5 or 6 times and the result are the same .
    There any way to solve this problem
    Best regards

    Reply
  3. Joe

    Hey, thanks for the info. I already use 6.0.1 firmware preserved using snowbreeze. Can I still use redsn0w to downgrade?

    Thanks

    Reply
    • iphonerepair

      you can always downgrade no matter what your current iOS is, you may have to try multiple methods though

      Reply
      • Joe

        I can try using the latest redsn0w version, 0.9.15b3. Which firmware version should I choose? WIll 6.0 cause problems, although I'm running 6.0.1?

        Reply
  4. lee

    if my serial number is xx039xx what week/year is it

    Reply
  5. Roberto Franco

    mine is week 28, soh I can't downgrade the iPad baseband, right? is XX928XXXXXX

    Reply
    • iphonerepair

      yours is 2009 model, it should be safe but proceed at own risks!!

      Reply
    6. « Older Comments

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