I got mine yesterday and immediately flashed Betolley´s 1122.
I don't know previous firm's, but it runs fine. I'll try GPS later.
I'm still trying to get into Android, but I think this will fulfill my needs.
Just two annoying points so far (Maybe beacuse of firmware):
1) In the recent apps list, when I click one it will open it, but the recent list will not close. I have to go home and open the app from the launcher.
2) The browser has some problems with radio buttons, messages, etc. I have to go home and click browser to see the message.

Maybe I'll flash back to 1102, that you said worked fine.

Cheers