I'm trying to put one of our old 3g's up for sale. I updated it to 4.02, jailbroke it with redsn0w, unlocked it with ultrasn0w. Then I realized that wifi wasn't working. I've reset the network settings several times, and have now even restored to stock 4.02 but wifi is still not picking up any networks. Wifi was working fine last I used it. Anyone have any suggestions?