I learned 2 important things today relating to the iPhone's firmware version check.Firstly, You can check for the firmware without opening the shrink wrap by checking the serial number.
As you can see, the 4th and 5th numbers represent the week number that the iPhone was released. In this image, this iPhone was released on week number 37, therefore the firmware version was most likely below 1.1.1.
So, if you want to unlock your own iPhone, check the serial number and make sure you don't pick up one that was released during week number 39 or later. Because that iPhone would have firmware version 1.1.1 already loaded -- which would make the unlocking process more complicated, if at all successful.
Another method of checking the firmware is to enter *3001#12345#* on the dial pad and press the call button. This would bring up the Field Test Service menu, and you can use the Versions menu to check the firmware version that has been loaded.If you have 3.14 you your iPhone has been loaded with firmware version 1.0.2. Any version higher than 3.14 would mean a later firmware, namely the dreaded 1.1.1.
(Note the misspelled "Firware"! LOL!!!)
The information is especially useful when you need to determine whether or not to proceed with the unlocking process.
* Information obtained from http://www.iphonegoboom.com
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