Updating Firmware Mav9 - Update Failed Lost Sync

I was updating my firmware on my Arducopter APM V1 board, and got an update failed lost sync message.  

Now I am unable to connect to my Arducopter APM V1 board at all:-(  

I was using USB with Mav9 because I coulnd't connect using the newer Mav.  

Do

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DROIDWORX CX4 with Arducopter & FPV

Well, I pulled the trigger and ordered a Droidworx CX4 airframe a few weeks ago.  I have been researching and contemplating this build for a while now and am really taking my time...

I already have a Gaui500X which I am setting up (Arducopter) for a f

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