ok so i stupidly thought i was helping a friend and upgraded her 2g through itunes and it is now stuck at the activation screen. i bought a prepaid at&t sim but you need a contract which i don't want to do seeing as Im in Oz. i have tried pwnage tool but in itunes after putting in DFU mode i get 1600 error

help im going insane!! how can i activate it and then i can try jailbreak it.

or how can i downgrade back to 3.0. itunes only gives me the option to eject

- try recovery mode instead dfu (power off, hold home and connect to
computer)
- try a different usb port
- try a different computer
- install itunes new

- or try to downgrade to 2.x firmware using itunes 8.2 with an original firmware then quickqwn / pwnagetool and then upgrade to 3.1 with pwnagetool

You can downgrade to 3.0 by shift clicking on the restore button (or option/alt if you are a on a Mac) and browsing to a 3.0 ipsw for your iPhone model.

it's been a while since i unlocked my 2g, so here comes a dumb question:

can i jailbreak and unlock a 2g which has the offical locked 3.1 firmware running?
no baseband problems etc?

thx alot and best regards

Yes. Use Pwnagetool for that.

jeh if you find the solution please mail me on vickrampurswani@gmail.com

I am also having similar problem. My friend upgraded iphone 2g and it got locked,
now i am not able to activate the phone as i dont have ATT sim. I also cant restore the phone as it gives me only option to activate or eject

Hey jeh i got it working. try this,
launch itunes. switch off your iphone, now keeping the home button pressed (the centre button on the phone) plug the usb cable (dont release the home button unless you see a symbol on the phone showing usb cable and itunes logo) This will bring your phone in recovery mode and you will see the restore option.

Mail me if you still cant get it.

I hope you know how to downgrade after you see restore button.

vickram