RedSn0w 0.9.14b2 released with improved baseband downgrading

By , Jul 5, 2012

Last month, the Dev Team released a new version of RedSn0w that allowed iPhone 3G (and some 3GS) users to downgrade their basebands. This was a big deal for users who had been stuck on the problematic 06.15 bb.

Today, the Dev Team has pushed out an update to the jailbreak utility that greatly improves on this feature. The downgrading process has been made simpler, and now works on a much wider range of devices.

MuscleNerd explains:

“Happy 4th of July! Today’s release of redsn0w 0.9.14b2 improves the iPad baseband downgrade and should cover anyone who couldn’t downgrade with 0.9.14b1. This version covers 3 different types of NOR chips in the iPhone 3G and 3GS (the earlier version covered only the most prevalent NOR chip). We’ve also simplified the process and added logging to help diagnose any remaining stubborn iPhones.”

Keep in mind that the 3GS warning still stands. So if your iPhone 3GS was manufactured in early 2011 or later, you shouldn’t even have the 06.15.00 baseband, let alone be trying to downgrade.

If you know what you’re doing, you can find the latest version of RedSn0w on our Downloads page. If you need help, we have a complete step-by-step tutorial on baseband downgrading.

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  • abig

    Hi,
    i tried the previous version and this one 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 ?
    Thanks

    • Jose Soto

      If your 3gs is older than 2011 models, you can try installing the ipad baseband then using redsnow to downgrade to a unlockable baseband.

      • abig

        thanks,
        how I can tell if my iphone is older than 2011 ? it was replaced sometime last year, and if it is the older model, where can I find the ipad baseband ? is it going to deactivate my GPS ?
        thanks again for your help

      • http://www.facebook.com/profile.php?id=1507068701 Jorit Studer

        Don’t install the iPad Baseband your iPhone will brick u don’t have the right year for doing that!
        Sorry but there is no hope for u at the moment :(

      • madmaxmedia

        From the serial number, specifically the 3rd,4th,5th digits. 3rd digit is year (2 means 2012), 4th and 5th is the week (for you the 8th week)

    • mordechai eliyahu

      lol did u install ultrasn0w?

      • abig

        i did, but as far as I know, ultrasn0w cant unlock thus baseband

      • mordechai eliyahu

        call att they will unlock it for u for free

    • http://twitter.com/asdnu Asad Saeed

      Yours is 2012 and 8th week..so u cant install ipad baseband..unlock is not possible.

    • mr432

      If you bought your iphone through at&t or had at&t plan then you can call them. They will unlock your iphone.

  • http://www.facebook.com/mustafasayte Mustafa Sayte

    how about 4G

  • http://www.facebook.com/profile.php?id=100000178639357 Asees Singh

    after downgrade it is necessary to install ultrasnow????

  • http://www.facebook.com/jennie.rinaldo.1 Jennie Rinaldo

    Is my serial number good for BB 6.15.00? XX923XXXXNP

  • sdmidnightrider

    DONT TRY THIS METHOD IT WILL MOST OF THE TIME MESS UP THE UNLOCK ON THE PHONE AND WILL ONLY LET IT WORK FOR ATT. JUST STICK WITH THE IPAD BASEBAND, ITS NOT WORTH THE RISK AND HASSLE.

  • http://www.facebook.com/miguelangel.morales.92 Miguel Angel Morales

    everytime i make a phone call i lose signal..and i have to wait until it comes back..started happening after the baseband downgrade..

  • http://www.facebook.com/OMGITSADOUBLERAINBO Kristen Leung

    Hey, I’ve been trying for about a month to jailbreak
    &unlock my iPhone..

    In my most recent attempt I successfully jailbroke my 3GS,
    but instead of downgrading the BB, it upgraded it. I decided to unlock it
    anyway, with the intention of figuring out how to downgrade the BB later, but
    it wouldn’t unlock, even with my installation of ultrasn0w fixer for 5.1.1.

    So thenn, I tried unsuccessfully to jailbreak it with the
    recent update of redsn0w.. it didn’t jailbreak& remained unactivated.
    However, I didn’t initially realize that it was unactivated so I synced it from
    my backed up iPhone data with the result of only the name of my iPhone being
    changed to its previous one… all of my music, apps, etc. wasn’t on there.
    After this I tried jailbreaking it again with redsn0w 0.9.14b2 with still no
    success.

    Any ideas as to why this is happening& how I can fix it
    ?

    Thanks in advance to whoever to replies to this!

  • Kamalacharan Sondekoppa Ramdas

    Hi, upgraded my jailbroken iPhone 4 to ios 5.1.1. After upgrade I jailbroke it again with Redsn0w and also restored apps using iTunes. I am unable to unlock base band 4.12.01 to use gsm in India. Tries Ultrasn0w, but it does not unlock this particular baseband. Please help.

  • mazree

    can it downgrade from 0.6.15 to 0.4.12 ?? need reply ASAP!

  • neep

    where i can download iphone 3g CPU baseband??