Hello everyone. So, I have gotten my iPhone 4S GSM unlocked and now it's saying no service - though, I have to restore in order to regain signal. The problem is, I am on 6.0 and I do not think that I can restore to it's original firmware (6.0 as i'm currently on) so I need to update to the latest firmware which is 6.1.3. Is there any way I can avoid updating to 6.1.3 because I would like to still have my jailbroken device. Thank you.