Going to VZ store after work. How to flash back to stock?

[mister2quick]

I've done my searching and i've turned up either A) broken links or B) links to Sprint's setup.

I need to flash my phone back to stock (from the latest 6.5 build) so I can get myself a new phone from the store.

The GPS will NOT work no matter what I do and the keyboard is extremely annoying (double/no letters on a single key press even after keyboard update).

Thanks for the help!