The iPhone Dev Team has released RedSn0w 0.9.15b2, which fixes a few items for owners of older devices.

The most outstanding fix is for 3GS owners with old bootroms — RedSn0w 0.9.15b2 brings back untethered jailbreak support for end users who fall into that category.

Most of the changes don’t pertain to owners of newer devices, but it’s always a good idea to ensure that you’re running the latest and greatest version anyway. Take a look inside for the full release notes.

Per the Dev Team’s Blog:

Update #1 (Oct 15): Version 0.9.15b2 fixes a few issues for 3GS owners: old-bootrom awesomeness is no longer forgotten directly after a restore, and iPad baseband upgrade/downgrade support is fixed (same production date cutoffs apply!). If your 3GS is currently tethered at 6.0 even though you have an old bootrom, just re-run redsn0w’s Jailbreak step (no need to restore). Don’t forget you can add some pizzaz with your own boot logo or a nerdy verbose boot.

So basically if you have a tethered jailbreak with an old bootrom 3GS, just re-jailbreak with RedSn0w to gain your untethered back.

Be sure to check out our full jailbreak tutorial for RedSn0w 0.9.15 here, and visit our dedicated RedSn0w page for further information.

You can download the latest version of RedSn0w from our downloads page. Do any of the fixes included with RedSn0w 0.9.15b2 impact you?

  • waleed LA

    NO ! i want to preserve baseband for my iphone 4 while updating to ios 6

    • I want to do same for iPhone 3GS but redsn0w give me error cause it tries to restore though redsn0w rather than makin me an ipsw….

  • The jailbreakers are referring to the iPad baseband that can be downgraded on the iPhone. Not upgrade/downgrade the actual iPad baseband… There wouldn’t be any benefit

  • “and iPad owners have a fix for baseband upgrades/downgrades.”

    They are not referring to the actual iPad, just the 6.15.00 baseband that can be downgraded to 05.13.04

    • No they meant “iPad baseband” for iPhone 3G an 3Gs, which is baseband “06.15.00” an since redsn0w 0.9.14b1 you can downgrade ur iPad baseband to 05.13.04 baseband… Witch means you still have unlock with ultrasn0w plus you get back GPS feature an now can offical restore with iTunes without makin a custom iPSW for preserving iPad baseband

  • Tinus

    Now it’s untethered… Thanks dev-team. Thanks Jeff for vids..

  • Last time when i updated my 3gs to ios my iphone became so slow, almost unusable. I’ve kept it in my drawer and i’ve never looked back.
    Can anyone tell me how it’s doing with ios 6?

  • Adrian

    redsn0w couldnt upload ibss 🙁

    • Same! Don’t understand y don’t redsn0w jus create an ipsw… rather than redsn0w tryin to restore… Kinda sketchy :/ plus than I had to restore with iTunes when I got tht error…

      • Adrian

        I wonder if Jeff knows of a fix

  • VIn

    still not fixed Unexpected error 2601 in baseband preservation restore !

  • iPhone 4 untethered jailbreak pleaseee

    • JomanJi

      Soon, hopefully 🙂

  • technogeeek

    how to Know that i have untethered bootrOM

  • Toon

    what means pre-A5 ?? i’m looking for downgrade my 4S from 6.0 to 5.1.1
    is this available with new Redsnow ??

    • $hrimp

      Its means a4 devices n down. U cant downgrade a5 devices yet. Only re-restore to ur current firmware via redsn0w with ur blobs saved

  • choco_ju

    I am looking for ways to upgrade to IOS 5.1.1 and then JB 5.1.1.
    I googled lots of forums and think if my device been JB before and have SHSH backup can upgrade it to 5.1.1 not sure If I got it right or wrong as now apple don’t sign off anymore
    my phone is 4.1 JB done by my frd whom we lost touch and can I upgrade it to 5.1.1 using the tiny umbrella? my cydia says I have 5.1.1 and 5.1.1 r on top barI am looking for guidelines for first time JB such as myself thx alot

    • $hrimp

      Tinyumbrella is a tool only used to fetch ur blobs n save them localy. Use redsn0w to stich a signed firmware and restore. U must have ur blobs save for the firmware ur tryn to restore to

  • 3GS is old and slow as hell now as it ipod 3g and iPad 1 .. i would not even bother to BJ those slugs

  • Jeremiah

    Guys help me please, my ipad 2 hasnt jailbreak, since 5.x and it is currently running on ios 6. i want to activate it so i can use it properly, i stuck at activation process and it says: “Your ipad could not be activated because teh activation server cannot be reached. Try connecting your ipad to itunes to activate it, or try again in a couple of minutes”. i will do anything just to fix this.

  • abig

    i tried the previous version and I still can’t
    unlock my iphone, I have a 3GS iphone with ios 5.0.1 , 05.16.05 baseband
    (serial qr2085Dxxxx) and i never installed ipad BB or some other
    jailbreak, is there a way to unlock this iphone ?

  • one more things we need this tool to support the dfu mode restore for a5 device now my ipad stuck in dfu and i cant to restore it because the red show me a message aboute connect the ipad in the recovry but i cant cause of that i select a rowng blob

  • kelly chavez

    I can’t update my iphone 4 to preserve baseband ios 6 because Resnow gave me error in the middle of update/restore. I ended up to restore back to 5.1.1 no matter how hard i tried.

  • DeBragg

    To check if u have old or new bootrom, just use redsn0w, put ur device in dfu mode,click Extras,then Even more, then Identity. A info page will be generated. Look for iBoot: 359.3 is old bootrom and 359.3.2 above is new boot rom. Alternatively, use iTools to check

  • david lucman

    nice… got my 3gs untethered again… tnx….;)

    • cina kkabr

      how you do it

  • sara

    how can I update the iphone baseband 5.16.07 to 6.15.00???

  • paul antaal

    Unexpected error (2601)… Help me Plz..

  • Josef

    I have iphone 4s running ios 6 and I wanted to downgrade to 5.1.1 saved my shsh blob with cydia. Can I do this using the latest redsnow?

  • Nik007

    Its not working, Cann’t restore my iPhone 3GS with Redsn0w 0.9.15b2 , Error has not fixed yet and Now I m stuck in recovery mode, I cann’t push iOS 6 nor to my previous 5.1.1.
    I am totally lost, my iPhone become dead.
    Redsn0w is not reliable.

    • restore to factory settings with itunes first, then jailbreak

  • syedjeme

    i hv jb my 3gs phone to ios6 using redsnow 0.9.15b2 sucessfully. it works but only for a while and keep crashing. any 1 out there hv done it without pblm?