iPhone 6.15.00 BaseBand Downgrade is Possible

UPDATE:

Follow this to fix your GPS issue by applying a small trick.

It is possible to downgrade upgraded iPad’s baseband on iPhones. The upgrade is provided to make it possible to unlock iPhone on any carrier. You mistakenly might have upgraded your iPhone to official firmware without knowing that it will also upgrade your baseband that is not supported by ultrasn0w to unlock. Then you don’t have any choice left but of upgrading your iPhone’s baseband to 6.15.00 or using it as iPod till any solution released. But upgrading to iPad’s baseband can stuck your GPS efficiency.
iNews, iTricks and iTips related to Jailbreaking the iDevice, installing Hackintosh on PC

But soon it is going to be possible to downgrade your upgraded baseband 6.15 to lower and unlockable. On September 17, 2011, MuscleNerd from iphone DEV TEAM had confirmed in response to a Twitter user’s question that soon they will release something  to downgrade the upgraded iPad baseband 6.15 to 5.XX that can be unlockable using ultrasn0w.
6.15 Baseband GPS Issue
Many people have upgraded their iPhone baseband to 6.15 to unlock the device to work with any carrier, but this upgrade have caused the GPS issue. Everyone who have upgraded their device baseband to 6.15 are experiencing the GPS issue and expecting a fix to downgrade this. It’s been almost 4 months and the fix is about to release very soon.
Till then keep fingers crossed!

UPDATE:
You can fix your GPS issue by following a small trick.

9 Comments

  1. Don’t worry dude. They have already found a way to do this by flashing the baseband chip to blank and again reflashing it back to 5.12 or some unlockable version by ultrasn0w. In mean time you can get it fixed to great extent by following a trick. Stay tuned, I’ll post about it in couple of days.

    Reply
  2. is it possible to downgrade to a BB that has not to be jailbreakable? a shop installed the jailbreak and i dont need it, but im stuck with the wrong BB (ipad). i restored my iphone because i did not realize, that the thing is jailbroken – so now im stuck with a serviceless brick…
    thanks a lot!

    Reply
  3. We’re listening to this kind of promisses for years. What prove do you have that you’re not lying just like MuscleNerd did all this time?

    Reply
  4. Dude Jailbreak has nothing to do with the baseband. iPad Baseband upgrade was made to make iphone’s unlockable using ultrasn0w. Is your phone Factory Unlocked?

    I don’t have the proof but the thing that convinces me to trust Musclenerd is that… flashing and erasing iphone’s baseband to blank is possible, even now. But it is also bearing a big risk that can even brick the iphone forever. May be Musclenerd is trying to figure out a way to do it by minimizing the risk factor.

    Reply
  5. The downgrade was already announced in december 2010… Since september there are no news about that they are still working on it.

    Reply

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