Please kindly help.
I bought an iPhone 3G-16gb and have 2 year contract with ATT, but within a few months the 3GS 32gb came out so I bought that on eBay. I sold the 3G-16gb and now using the ATT sim for the 3GS-32gb.
My dilemma is that I have to go overseas to Asia within a month from now and will need the 3GS to be unlock to use the local services over there. Please allow me some helpful suggestions on what firmware should I to use to restore now and be able to take an unlock phone to Asia.
I actually tried the ATT Non-Activated firmware to restore to 3.1.2 already and was able to get ATT 3G signals, but when I tried to unlock with blacksn0w via Cydia, I resprung to no signals at all.
So now before restoring again, please let me know if I can use the Activated Firmware to restore when I still have the ATT sim in the phone?
Many great thanks for your valuable time.