Originally Posted by goldfinsh
I managed to get back to JB and WiFi worked fine. I then upgraded to KK thru OTA then did a factory reset but WiFi is not working. As I mentioned, I can select a connection then I enter a password but nothing happens whether the password is correct or not.
I managed to get wifi back by deleting everything in /persist...
I had the issue on jelly bean from clearing that partition, and then copying WCNSS_qcom_wlan_nv.bin to persist fixed it, but on kitkat it seems to be the opposite. Make sure you have your root explorer set to show hidden files, clear everything in persist, then reboot.