iPhone: Upgrading to 2.0 and Downgrading to 1.1.4

July 27th, 2008 | Gadget & Stuffs

Oh yeah. It’s the time of the year again that my itchy hands have to do something. Being at Microsoft and wasn’t able to check my mail with the iPhone is really frustrating. With the recent release of firmware 2.0, I just got to have it upgraded so I could use Outlook with my corporate emails. So just in case I remeber what I did (Cause I don’t when I unlocked version 1.0.2). This time around, things have been fairly simple and I don’t have to go through a bunch of hoops and loops just to get things work. So here’s for me to remember what I did:

Download xWinPwn 0.3
Download Firmware 2.0 for 1st Gen iPhone (2G sounds dumb)
Download and install iTune 7.7 - Find it HERE
Extract xWinPwn and copies the Firmware into this same folder.
Open xWinPwn and click on “Create Custom IPW” that will create a custom firmware with some shit in it that will work the magic.
Start PwnAge - I don’t think this is necessary but do it anyway.
Turn off your phone and remove the sim card.
Start iTune
Start your phone in DFU mode
Press Shift+Restore and select the custom firmware to restore
When done, you have a jailbroken+activated+unlocked iPhone again. Yay.

So what if you want to downgrade? This is what I did though it wasn’t as simple as I thought. I did the exact step as above except that I used a 1.1.4 firmware. All was good until the end, Error 1015, crap. So it was the baseband version that’s causing the issue. So here’s what to do:

Download and install iTune 7.5
Download ZiPhone 3.0 - (this app is flaky, so not linking)
Click on “ALL” and let it do all the crap it does
Voila, a jailbroken+activated phone but not unlocked - find this info easily on G
Follow step 9 above and restore it back to 1.1.4 to factory settings locked and shit.

Yay. Upgraded and downgraded just for fun All the info here are for personal references only and not every detail steps were layout here. What I did was fairly simple and you can easily figure out any missing steps that I might have missed here. Enjoy.