4 Replies Latest reply: Oct 9, 2010 2:51 AM by Malcolm Rayfield
dankton12 Level 1 (135 points)
A colleague is looking at an unlocked 3gs iPhone advertised for sale which is running on firmware 4.1.

He is aware of the problems a lot of people have experienced with this firmware on a 3gs and has been attracted by the seller stating; +'the phone can be restored to __factory settings__ prior to sale which will downgrade the firmware to 3.1.3 as some people prefer this version'+

Does a restore to factory settings also wind-back the firmware without jailbreaking? I was under the impression that this was not possible.

Also as the phone is officially unlocked by the carrier 02 would a factory reset reverse the unlocking?

HP, Windows XP Pro