Ok those people who does not want 2.0 because want Installer apps on iphone or ipod.. im going to teach you how to get ou of 2.0
First :
Downgrade your iTunes 7.7 to 7.5 or 7.6.2
And then: Rename your iTunes folder to itunes backup or just delete it.
Download the iPhone 1.1.4 firmware from the link below :http://appldnld.apple.com.edgesuite.net/content.info.apple.com/iPhone/061-4313.20080226.Sw39i/iPhone1,1_1.1.4_4A102_Restore.ipsw
And restore with iTunes alt for mac users and shift for windows users.
You will get a 1015 error or something like this .. and you will be able to use Ziphone or other GUI program.
But if get 60.. you will have to restore again 2.0...and satrt all again..
Your baseband will be the same of the 2.0 so you dont have many choices.
-Or you use PWNAGE tool and unlock 2.0 and be happy...
-or you use refurbish from Ziphone iEraser...
-restore 1.1.4 again
-unlock it
-Connect to a wifi connection
-and install from installer erase 2.0 you will identify.
-restore again and unlock it...
-Maybe it will work...
I prefer staying with 2.0 unlocked and waiting for Cydia programs.
With you want to unlock your iPhone 2.0 use winpwn 2.0 or pwn tool 2.0 it is very simple.
Thanks
Edison Cury Neto