Android 4.2.2 I257MVLUAMK5
I used an app called "Wifi Pass Recovery & Backup" and it killed my wifi. It tries to turn on and fails. I could redo my phone completely but I would rather fix it.
I have tried many things:
I made a backup with the app before doing anything and restoring that did nothing. Using the in app "reset wifi settings" button also did nothing but remove my saved networks.
Using ES File Explorer I have looked at the /system/bin/wps_supplicant, /data/misc/wifi/wps_supplicant.conf, /system/etc/wifi/wps_supplicant.conf. Played around with permissions, owner and checked MD5 with backed up versions. One thing I noticed was that the permissions seemed to reset when I would reboot.....
I used logcat and couldn't gain any ground there.
Some post I saw said something about replacing /system/bin/wps_supplicant with the one from the stock firmware, but i couldn't figure out how to find the files in the firmware I downloaded. I did find a factory image from google and was able to extract the files I was looking for, but they didn't work either. No surprise there.
I would love some help this as you guys are the experts!