Downgrade 3.0 Baseband

[LePigeonBleu]

Hey!

I've already read: https://forums.macrumors.com/threads/707575/

I'm interested in knowing how to downgrade my 3.0 baseband, but I would love a step-by-step guide on how to do it so I don't brick anything.

Here's what I have: iMac/iPhone 3G.

If possible, a link to any extra software/firmware I'd need would be great!

Thanks so much,

Mark

 

[LSUtigers03]

That topic has a step by step guide.

 

[LePigeonBleu]

true, some of it is. i did follow some steps to downgrade to 2.2.1, but once I did, quickpwn would not recognize my iphone 3g.

anyone know what the issue is?

m

 

[impulse462]

true, some of it is. i did follow some steps to downgrade to 2.2.1, but once I did, quickpwn would not recognize my iphone 3g.

anyone know what the issue is?

m

did you put the phone in dfu mode before restoring back to 2.2.1, and if the restore worked and gave you that error (1003 i think). if you did, did you hold down the power and home button for 15 seconds after the restore was complete?

 

[LePigeonBleu]

i did everything properly, and used iRecovery to "activate" my phone. i have done this before, except now it isn't wanting to work.

could it be that i have itunes 8.2?

m

 

[LSUtigers03]

i did everything properly, and used iRecovery to "activate" my phone. i have done this before, except now it isn't wanting to work.

could it be that i have itunes 8.2?

m

I'm not sure about iTunes 8.2 being an issue as I haven't upgraded my iTunes yet. When I upgraded to 3.0 then downgraded to 2.2.1 I couldn't get quickpwn to recognize my iPhone when I used my MacBook. I used a PC and quickpwn worked fine. If you're using a Mac try a PC and see if that works.