Can anyone share original IO80211FAMILY kext for OS X Mountain Lion 10.8.5 Can anyone share original IO80211FAMILY kext file for OS X Mountain Lion 10.8.5 as I by mistake deleted it and now my WiFi has stopped working.

I could not find it on Google, please if you have the 10.8.5, please share original file.
Run the 10.8.5 combo updater, from https://support.apple.com/kb/dl1676?locale=en_GB

This will ensure all updates since 10.8.0 are applied.