If you have an iPhone arriving and can't get into the phone to check firmware (chicken and egg situation) do the following, taken from hackint0sh.org
--------------------------------------------------------------------------------
For field test mode follow:
You can check what firmware is preinstalled by going to the emergency call, entering *3001#12345#* then pressing "Call". Under Versions you will find what revision firmware is on the phone out of the box.
03.12.06_G Is firmware 1.0.0
03.14.08_G Is firmware 1.0.1 and 1.02
04.01.13_G Is 1.1.1
----------------------------------------------------------------------------------
It's looking like someone has already managed to downgrade, I haven't checked into this thoroughly but if you HAVE got 1.1.1 just be patient
Social Networking Bookmarks