Did u do it with WIndows? Did u upgrade back to 1.1.1?
I use a power pc mac.
I was on 1.1.1 and reverted to 1.0.2.
You can also do it with windows, just need to use a different installer. Do a search.
Using this this guide below and following exactly it worked like a charm adding the installer.
They also explain the advantages in very simple straight forward language.
First of course you need to restore back to 1.02 so do a search on google to find the directions
I did not save them. If you require them, I can find them again for you.
http://iphone.macworld.com/2007/09/iphone_hacking_kit_the_next_ge.php
I will make it clear that I did NOT unlock my phone. Unlocking allows use on other networks other than ATT and I am happy using ATT. I CAN go back to 1.1.1 but then I would lose all my applications, ringtones, and freedom. It is a matter of simply restoring back to 1.1.1, but why? For iTunes? I can get those off my computer. Everything still works with iTunes, syncs, etc.
Read the guide and see why it is so very compelling. These developers worked very hard.
I only wanted my ringtones, but when I saw what else I could do with my iPhone, well the rest is history.