Hi, I have a 3gs with 3.1.2. I used redsnow to jailbreak it with the original sim in the phone. Now, the phone wont recieve any cellular signal. I do not have my SHSH signed (apple stopped signing 3.1.2 on the day that I got the phone and I used the jailbreak). My question is, do I have to restore and jailbreak again, or can I run redsnow again without a full restore? Also, I plan on using an unlock later. Is it better to hacktivate and then use unlock or should I not hacktivate (since i have the original sim with me)? If I do choose to hacktivate, I can just remove the sim before jailbreaking and leave it empty?