Hey there.
I just updated my iphone to 1.1.2 to downgraded it again to 1.1.1.
After that i added the link to appsnapp to my contacts and used it.
After a few seconds it went back to the activation screen.
But when i want to unlock it (used slide to emergencs) it doesnt crash and just goes back to the keypad.
Anyone's got an answere ?
Do i need the AT&T card or does it also work with my vodafone card ?
Thanks!

I followed this tutorial with my 1.1.1 OOB phone and it worked great:
http://iphone.unlock.no/#Bypass-Acti...-and-Jailbreak

There are instructions on there to downgrade from 1.1.2 to 1.1.1 (as in your situation.):
http://iphone.unlock.no/#recovery-restore-mode

sometimes is really hard to work the tiff. Try again. over and over

DO NOT have to try again and again....
Do this: after downgrade to 1.1.1, setting wifi. Connect your phone to computer, turn on itunes then start the *#307#, connect to jailbreakme.com
You should be able to install AppSnapp