This is my first post here, its great to see such an active community!
I am also in the same position as thesheikh. I am in the UK, have a phone that was bought from the US which has been hacked for Jailbreak and Unlocked onto any network.
Unfortunately, it wasn't me who did the hacking in the first place (i let a colleague do it). And i'd like to upgrade the firmware from my current 1.0.2 to something more recent but I don't want to brick my beautiful phone!
I am very technically competant, but not very daring