Downgrading iPad BB and Custom IPSW

[KingHuds]

So I've tried to downgrade from the iPad baseband on my 3GS, redsn0w runs, does its thing, but my 3GS then shows a blank baseband and all radio functions stop working, installing the iPad baseband again fixes this, any help?

Also I've been trying to upgrade to 5.1 (on 4.1 right now), but even in DFU mode shift-restore is not working in the latest itunes.

 

[BFizzzle]

So I've tried to downgrade from the iPad baseband on my 3GS, redsn0w runs, does its thing, but my 3GS then shows a blank baseband and all radio functions stop working, installing the iPad baseband again fixes this, any help?

Also I've been trying to upgrade to 5.1 (on 4.1 right now), but even in DFU mode shift-restore is not working in the latest itunes.

are you making the ipsw in snowbreese? for the shif+click restore

 

[dhlizard]

So I've tried to downgrade from the iPad baseband on my 3GS, redsn0w runs, does its thing, but my 3GS then shows a blank baseband and all radio functions stop working, installing the iPad baseband again fixes this, any help?

Also I've been trying to upgrade to 5.1 (on 4.1 right now), but even in DFU mode shift-restore is not working in the latest itunes.

If the downgrade doesn't work the 1st time, keep repeating it until it works (might take 2 or 3 tries)

 

[KingHuds]

are you making the ipsw in snowbreese? for the shif+click restore

Sorry should have clarified - holding shift and clocking restore doesn't bring up the file select screen, just continues with the standard restore.

If the downgrade doesn't work the 1st time, keep repeating it until it works (might take 2 or 3 tries)

So the blank baseband is common? I tried it twice with the same results, just didn't want to brick the phone, especially since it has no GPS problems even on the iPad baseband.

 

[Applejuiced]

Sorry should have clarified - holding shift and clocking restore doesn't bring up the file select screen, just continues with the standard restore.

Are you on a mac?
Its option restore on a mac and shift restore on windows.

 

[KingHuds]

Are you on a mac?
Its option restore on a mac and shift restore on windows.

No mac for me

 

[Applejuiced]

No mac for me

So you're on windows?
And holding down the shift and clicking restore doesnt let you select the custom ipsw file?

 

[KingHuds]

So you're on windows?
And holding down the shift and clicking restore doesnt let you select the custom ipsw file?

Exactly

 

[Applejuiced]

Exactly

Try using another computer to restore to the custom ipsw.
Very weird, it works for everyone else.

 

[dhlizard]

So the blank baseband is common? I tried it twice with the same results, just didn't want to brick the phone, especially since it has no GPS problems even on the iPad baseband.

Yes, read similar experiences here

http://blog.iphone-dev.org/post/26534086824/baseband-freedom