iPhone 3GS downgrade from baseband 5.15.04?

[awadeee]

Was just wondering if it's possible to take a 3GS running on 4.1 with baseband 5.15.04 and downgrade the baseband to something unlockable? I've scoured Google and found nothing but I figured I'd try here before I gave up. Thanks!

 

[Intell]

The 3Gs baseband cannot be downgraded. To unlock, you'll have to upgrade it to the iPad baseband. Warning: Read about it. You might lose GPS.

 

[erichkooi]

Was just wondering if it's possible to take a 3GS running on 4.1 with baseband 5.15.04 and downgrade the baseband to something unlockable? I've scoured Google and found nothing but I figured I'd try here before I gave up. Thanks!

I just did the downgrade from iOS 4.2.1 to iOS 4.1 without downgrade the bootrom and it working well.

You can read more on
https://forums.macrumors.com/threads/1086439/

 

[labman]

I just did the downgrade from iOS 4.2.1 to iOS 4.1 without downgrade the bootrom and it working well.

You can read more on
https://forums.macrumors.com/threads/1086439/

downgrading firmware has nothing to do with baseband! firmware yes if you have shsh blobs saved. Baseband can not be downgraded. understand what you are talking about before you try to help others.

 

[Applejuiced]

You cannot downgrade the baseband on a 3GS.

 

[awadeee]

The 3Gs baseband cannot be downgraded. To unlock, you'll have to upgrade it to the iPad baseband. Warning: Read about it. You might lose GPS.

Yeah, I went through all the 6.15.00 business with my old 3G that I ended up selling. I don't think I'll end up doing that to my 3GS.

@Everyone: Thank you for the helpful input!

 

[lansa]

Can my 3GS thats been unlocked with ipad baseband somehow be restored so that its not tethered anymore? I dont mind losing the unlock or the jailbreak, just dont wanna be tethered anymore.

 

[hackthatphone]

You can run greenpoison over a redsn0w jailbreak.