iPhone Generation : 2g
Current Firmware : upgraded to 2.2
iTunes Version : 8.0.1.11
Computer Platform : OSX 10.5.5
Jailbreaking software : Pwnage 2.2
Problem Encountered : Could not activate cellular data network
Problem Screenshot (if any) :

Bros, just upgraded to new FW 2.2 and now my GPRS not functioning at all. Tried resetting network settings but to no avail. Thank you in advance for your help.

Thanks bro harmeet15! Changed to APN unet and got it working. Guess its a different setting if u have activated 3g from maxis.