Downgrading from iPhone 2.0 Beta 5 5a274d to, . . . well, what?

[FireFish]

I'm running iPhone firmware 2.0 Beta 5 Build 5a274d on my development phone. I'm a legit provisioned Apple Developer running an unhacked version of it (I don't think it's been hacked anyways).

Bottom line: I want to downgrade back to 1.1.4 tonight and need to know exactly what to do, considering the framework & baseband updates that come along with the 2.0 image.

Has anyone done this yet? Will I be a first?

~~ ALSO: Does anyone know if developers will be able to upgrade to 2.0 final when it's released (June 9 or earlier, hopefully)? I wanted to know this in addition, because I will probably install 2.0 Beta 5 or so before it gets released again after downgrading.

Please provide feedback.

Thank you.

[Apple iPie]

Hi! I think I have a solution for you.
There was a package which is able to unlock your BETA5 baseband...,try finding it in an installer.app .....
Otherwise,get your iPhone into DFU mode and then restore to 1.1.4!!

[FireFish]

Originally Posted by Apple iPie

Hi! I think I have a solution for you.
There was a package which is able to unlock your BETA5 baseband...,try finding it in an installer.app .....
Otherwise,get your iPhone into DFU mode and then restore to 1.1.4!!

You can't get installer.app onto a 2.0 Beta 5 because it hasn't been jailbroken yet.
I have 2.0 legit, not hacked or PWN'd / Jailbroken.

Plus, you can't just downgrade to 1.1.4. I know that already & hence won't even bother trying it. What would probably happen is an endless rebooting process & iTunes displaying an error 1015 (just a guess from what I could see happening based on a baseband upgrade).

Any other ideas?

[Apple iPie]

You got me wrong. Perform a DFU restore to 1.1.4,and THEN install this package in installer.

[KeyMastur]

Yup. DFU it, downgrade to 1.1.4. Jailbreak with Ziphone so you can get past the 1065 error in Itunes. Run Installer - look for Ierase - just search "erase" - run this and it'll downgrade your baseband (turn auto lock feature off before you do). Then you can re-install 1.1.4 through itunes and restore your phone to factory state with no errors.

[VenomousSVT]

Originally Posted by KeyMastur

Yup. DFU it, downgrade to 1.1.4. Jailbreak with Ziphone so you can get past the 1065 error in Itunes. Run Installer - look for Ierase - just search "erase" - run this and it'll downgrade your baseband (turn auto lock feature off before you do). Then you can re-install 1.1.4 through itunes and restore your phone to factory state with no errors.

this should be your solution right here.. great post!