How does it work for me?

[slidingmike]

I know most of the members here are tired of the classic "i dont know how to" cases, I am one but right now i'm back to being that classic noob!

Anyways, I just got my hands on a ibook g4 from a friend (50) bucks couldnt say no and i figured i would finally be able to jailbreak my iphone!

Until i started reading and looking at stuff and i think i've ran into some problems i'm not to sure but anyways, i do have some questions about pwnagetool and if i can even pull this off.

Couple quick points:
iphone 3g running 3.1 default software.
ibook g4 running mac os x 10.4.7

Can i create a custom firmware that will work on my iphone? Or will it not because i'm on 3.0 anymore.

Second, if thats a no, and i think i know the answer to the following (no) but i gotta know, is there a way to downgrade back to 3.0? or is it not possible because 3.1 upgrades the baseband and that is what causes the 1600 errors when trying to go back firmwares.

[boozie]

You should be able to create the custom firmware. I'm not 100% sure if you have to down grade or not to install it though. I have downgraded from 3.1 to 3.0. I did get an error, but I searched the forums and found the fix. I would recommend DFU mode (not restore mode) to downgrade and to upgrade.