Hello, I got an iPhone from a guy that used Ziphone to attempt to unlock it Anyway, he said it would no longer read his sim after that. So when I got it I when ahead and restored it and use winpwn to jailbreak it at version 2.02. However now it shows no bars for signal. I read somewhere to try a restore with 1.1.4 and go from there? Is that what I should do? Or?