I have a 2014 Model S 85, it tried to update firmware from 7.0 to 7.1 this evening. It went through the process (I thought) but it didn't apply it, then it tried again and although the firmware now reads 7.1 it is giving me errors that the software needs to be updated and to contact tesla service. It is also now inoperable, the vehicle won't drive or (even worse) charge due to a failed OTA update. Anyone have ideas on how to go about fixing this issue? (Other than the standard take it to the service center...) Note; I believe what happened was low 12V battery power, been having nothing but trouble with my 12V so I'm putting extensions on my 12V leads and installing a better 12V solution in the frunk, the Tesla set-up was a horrible design (much better in the D models of course).