My boss has bought an unlocked iPhone in India and brought it back to Europe. It's running OS 1.0.2, and he would like to upgrade to 1.1.1
He has no idea how it was unlocked, and is not in touch with the vendor.
How can I tell what method was used to unlock the phone, so I can safely upgrade his phone using the new method ?
Are there tell tale signs which could identify it as :-
- geohot h/w hack