iPhone Dev Team Working On A Solution To Downgrade Baseband 06.15.00 To 05.15.05 For iPhone 3GS, iPhone 3G

Jailbreak iOS 4.1 for iPhone 3G - Redsn0w

Some users have reported significant loss of GPS signal after upgrading to baseband 06.15.00 using Redsn0w or PwnageTool to unlock their iPhone.

MuscleNerd of the iPhone Dev Team has just confirmed that they are working on a solution that will allow users to downgrade their iPhone’s baseband back to 05.15.04.

MuscleNerd revealed this while responding to one of his followers on Twitter:

@Lezanz sorry still collecting data on that. But also working on a bb downgrade (!) method for those with unlockable bb

@idansc yes if the BB downgrade method works, it will work for 06.15 too.

We are assuming that the iPhone will still be unlocked after downgrading to baseband 05.15.04.

MuscleNerd of the iPhone Dev Team also revealed earlier today that he has managed to get untethered jailbreak to work on iOS 4.2.1. But MuscleNerd hasn’t provided an ETA on when the updated tools will be released. We’ll let you know if there are any further updates.

Are you are experiencing any issues with GPS on your iPhone after unlocking it using the combination of PwnageTool or Redsn0w and Ultrasn0w? Do you want to downgrade the baseband from 06.15.00 to 05.15.04? Please let us know in the comments below.

[via MuscleNerd]

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