GUIDE: How to Find the Firmware and Baseband Version of Your iPhone
 

Step One
Press to launch Settings from your Springboard.
http://www.iclarified.com/images/tut...0453/10453.png

Step Two
Press to select General from the Settings Menu.
http://www.iclarified.com/images/tut...0454/10454.png

Step Three
Press to select About from the General Settings Menu.
http://www.iclarified.com/images/tut...0455/10455.png

Step Four
From the about screen you can find your firmware version under the Version label.
http://www.iclarified.com/images/tut...0456/10456.png

Scroll down and you can find your baseband version under the Modem Firmware label.
http://www.iclarified.com/images/tut...0457/10457.png


iPhone Classic
Firmware = Baseband (Modem firmware)
1.0.0: = 03.11.02_G
1.0.1: = 03.12.08_G
1.0.2: = 03.14.08_G
1.1.1: = 04.01.13_G
1.1.2: = 04.02.13_G
1.1.3: = 04.03.13_G
1.1.4: = 04.04.05_G
2.0: = 04.05.04_G
2.0.1: = 04.05.04_G
2.0.2: = 04.05.04_G
2.1: = 04.05.04_G
2.2: = 04.05.04_G


iPhone 3G
Firmware = Baseband (Modem firmware)
2.0: = 01.45.00
2.0.1: = 01.48.02
2.0.2: = 02.08.01
2.1: = 02.11.07
2.2: = 02.28.00
2.2.1: = 02.30.03


IF THIS POST HAS HELPED YOU PRESS THANKS :D

hehe
tell everyone how to check this without jailbreaking iphone ... :)
when you get unjailbreaked iphone and want to know frimware version ... how ? :P

when you jailbreak if its firmware version different it will show error msg in winpwn

Try putting *3001#12345#*

This code works for some firmwares only