How can I check which firmware version is installed onto my iphone?
You can check what firmware is installed on your iphone by going to the emergency call, enter: *3001#12345#* then press “Call”. Under Versions you will find what revision firmware is on the phone. 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 firmware 1.1.1 04.02.04_G is firmware 1.1.1 04.02.13_G is firmware version 1.1.2 04.03.13_G is firmware version 1.1.3 04.04.05_G is firmware version 1.1.