Updated my Galaxy S3 to Android 4.3 (att) today. Now I can't connect to Wifi, or even find my home network, unless I turn off mobile data. I tried calling att tech support, they suggested factory reset. It's not my router as my laptop and game systems are connecting just fine. S3 connected before update. Next step is Samsung tech support but from what I've read online my best bet for a solution is here. Anyone have a fix for this? One that does not involve a factory reset.
Edited to add I updated via OTA. No other problems... So far.