[GUIDE] Windows based v1.1.1 downgrade to v1.0.2 - Working!

[DMSROX2]

I updated my phone from 1.0.2 to 1.1.1 when the "upgrade" first came out. Of course I hated it so I reinstalled the 1.0.2 OS and my 3rd party apps.

Now that you can jailbreak 1.1.1 I would like to do so. Does having the new baseband & 1.0.2 cause a problem?

Do I need to find the instructions and downgrade my baseband to it's prior state?

I do not need the phone unlocked as I am with AT&T.

Any help or advice would be great.

THANKS

Donnie

[heespharm]

When I run Ericas unlock.. I get a white screen... What am I supposed to do? Am I installing Ericas unlock incorrectly? Can someone please let me know. I have firmware 1.0.2 and baseband downgraded already successfully. I just cant use my sim card yet

Look for a program called winstaller on these forums... Only way I've gotten this to work

[ladjei]

is there an alternative method of downgrading without using SSH?

My iphone just goes to the yellow triasngle with please connect to itunes. I tried a restore through itunes and got an error saying it cant restore error code (2003).

[peeInMyPantz]

Hi,..
i have never upgraded to 1.1.1 before...
but i need to run ieraser so that i can reload my baseband with bbupdater
do i need a v3 secpack instead? coz a v4 secpack is not helping
i keep getting checksum error for EEP and FLS

how do i obtain a v3 secpack?