I tried your suggestions @
steve99.
I deleted OFM from my computer (it's on a Mac but is seems to work fine) Re-installed the program by following the instructions.
I then connected the OFT, let it do its thing. Then I updated the V1 template file.
All seemed to be good.
Sadly, when I connect it to the car I get the same error:
Protocol file corrupted
Use OFM to update.
OFTCODE:10002
support.openflashtablet.com