Redsn0w 0.9.14b2 Brings Improved iPad Baseband (06:15:00) Downgrade; Adds Ability to Put iOS Device in DFU Mode


iPhone Dev team has released a new version of Redsn0w (Redsn0w 0.9.14b2) that improves the iPad baseband downgrade that was released back in June.

iPhone Dev team have also added a feature called DFU IPSW that should make it a lot easier to put an iOS device in DFU mode.

The DFU feature will be extremely useful for users who can’t put their iOS device in DFU mode due to a faulty or non-responsive Home or Power button.

Baseband Downgrade:

This version of Redsn0w covers 3 different types of NOR chips in the iPhone 3G and iPhone 3GS (the earlier version covered only the most prevalent NOR chip), so iPhone 3GS users who had problems downgrading the baseband using Redsn0w 0.9.14b1 should try this version of Redsn0w as it should fix their issue. The previous version covered only the most prevalent NOR chip.

iPhone 3GS and iPhone 3G users can follow these simple steps to downgrade from 06:15:00 baseband:

  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.

Dev team have again reiterated that iPhone 3GS units manufactured in early 2011 or later have a NOR chip that’s incompatible with 06.15.00 and so trying to install the iPad baseband will brick the device.

For those who are wondering if you can update your 3G or 3GS to 06.15 solely for the purposes of downgrading to 05.13.04, the answer is “yes” for 3G owners, and “maybe” for 3GS owners.  The iPad baseband is not compatible with 3GS units manufactured week 34 of 2011 or later.  If you have an iPhone3GS and if digits 3-5 of its Serial Number are 134 or later (xx134…), then you should NOT try to install the 06.15 baseband on your 3GS!  It will brick your radio, preventing both the downgrade from working and normal iPhone software from using it as a phone!  Be warned!


iPhone Dev team have provided the following details about how to use the DFU feature:

In redsn0w, go to “Extras->Even More>DFU IPSW” and select an IPSW that is currently being signed for your device and that you’d normally be able to restore to without any hacks.  redsn0w will create an “ENTER_DFU_” version of the IPSW that you can restore to just like any other IPSW, except that now you’ll be dumped into DFU mode towards the end of the restore (WARNING, your screen will remain completely black…the only way to even know its on is that iTunes and redsn0w will detect it!). 

You can download Redsn0w 0.9.14b2 from this link.

Let us know if you were able to successfully downgrade the baseband with Redsn0w 0.9.14b2 in the comments below.

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  • osama-bin-laden

    I’m trying to downgrade ipad bb 6.15.00 on my 3G since last night.
    Its not working at all.
    After uploading the Ram Disk and everything, where it says, ” everything happens on your phone now “, The phone goes blank, white lightly lit screen and that’s it. Its stuck there forever. Though when I reboot the phone boots normally into IOS.

    I’ve 5.09 bootloader.
    4.1 ios.
    wtf ?

  • yourmaninthestreet

    WORKED PERFECTLY! Am I now able to upgrade to 5.1.1 without issues?

  • Guest

    it worked thanks. I downgraded

  • Filek

    Had to do it couple of times but now I am on 5.13.04 BB, GPS works fine
    3GS on 5.1.1 and xx951
    Thank you Dev team for hard work

  •ério-Valle/100000930374076 Rogério Valle

    Works perfectly, but I can´t connect on internet … Does anyone can help me with tips?

  • lyly

    working iphone 3g got updated & got locked shows ‘no services’ even it doesn’t permit to enter into home screen.

    solution please

  • ilikegreen

    What’s an NOR chip? Is NOR related to the bootloader version? It says that it works with the 3 most common NOR chips, does this mean it will work with an iphone 3g running bootloader 5.9? Thanks.

    • THER005T3R

      NOR is the phone’s NOR flash memory – the flash.

  • DigitalWorldz

    Very good article

  • jojo

    the reason why the baseband description turns blanc is probably because redsnow cant entirely remove it in one go, just something i head though

  • Sam

    My iphone 3G with model no. MB046LL stucks at Modem Firmware 06:15:00. It did not work for my 3G. I even tried 15beta3 version. I was almost an expert in performing DFU mode but it said Modem communication error during last stage of DFU mode. Pls help!

    • Sam

      My bad. I tried again. It erased all modem data, bluetooth data and no modem firmware. How do I get them back?

  • IrFan AhMed

    bro…… rock !!!! xD

  • dan

    I got a 3gs and its serial is xx13d ! can I downgrade to ipad baseband or it will brick ? please need answer

  • tony

    phone is locked on o2 how can I unlock it to t,mobile?

  • skillnwill

    Starting from scratch (HIGHLY RECOMENDED) for 3gs, >ios6.1

    1. restore iphone to factory settings in itunes

    2. download ipsw 6.0 from ipswdownloader . c o m

    3. run redsn0w -> extra -> select ipsw 6.0 -> back -> jailbreak -> install ipad baseband [[[ check settings -> general -> about -> baseband is 6.15.00 - if not installed you did something wrong ]]]

    4. again, run redsn0w -> extra -> select ipsw 6.0 -> back -> jailbreak -> downgrade ipad baseband [[[ process takes time when flashing baseband - DO NOT RESEST ]]]

    5. done

    daps to DevTeam

    • skillnwill

      6. again, run redsn0w -> jailbreak ( INSTAL CYDIA, but it will not instal )

      7. after restart again, run redsn0w -> extra -> select ipsw 6.0 -> boot tether ( not untethered yet )

      8. after restart open cydia ( DO NOT DO ESSENTIAL UPGRADE, YOU WILL HAVE TO RESTART !!! ) -> user -> search and install p0sixspwn FIRST (will make device untethered)

      9. after instal then do essential upgrade

      10. DONE! iphone 3gs untehtered jailbreak running baseband downgrade

  • EvilUpcode

    The iPhone 3G or 3GS needs an iPad baseband for the iOS 4.2.1 to be unlocked.