Kevin, I did it on my 3.7 and its not too difficult.

It appears the resistor shorting window is a few hundred milliseconds long and it’s 'just' after the 2nd startup beep. Keep the wire shorted for ~1 second then remove it. The screen should come up with a video preview but no text at all. Anything else, such as a bunch of meaningless gibberish with the live preview screen, and the hack has likely not gone properly. The nerve pinch test will tell you for sure though, as a successfully hacked camera should say “not initialized”.

It took me ~20 tries or to so get it right. At times the camera may freeze up, and you may need to pull a battery out to shut it down.

I’ve got 11 more coming for the other local jet guys up here in Vancouver. Get em’ while they’re hot! Ben's da man!!!

Good luck!
Kelly