Hello..i have a problem with my iphone 3G model..i accidently update my firmware to 4.0.2..and downgrade it back to 3.1.3..i can jailbreak my iphone..install cydia..but, my sim not detected..it show 'NO SERVICES'..what can i do? my set is US..

here my current version :

-Version : 3.1.3 (7E18)
Modem Firmware : 05.14.02

Before,my firmware is 3.1.2 and i already update my Cydia..after that,i upgrade to newest version..then all this happen..

This post has been edited by shedvtec: Sep 23 2010, 08:34 PM