I have an iphone 3GS and I upgraded it to ios 5.1.1. When I first switched it on, I followed the normal setup where you choose the language and the country, however I couldn't complete it since my sim card was not valid. So I followed this guide How To; Hacktivate 5.1.1 iPhone 3GS & 4 (Activate Without Sim) Step By Step! - YouTube and managed to hactivate my iphone (using red snow). Then I installed ultrasn0w fixer for 5.1.1 from cydia and then ultrasn0w. However I am still getting the no service signal when I insert my sim card.
Anything I can try out to solve this issue?
Thanks in advance.