I, pretty much, had the same thing happen just a day or two ago. My upgrade failed just as I released the Jog Wheel.

I went back and started the upgrade from the beginning, only this time I held the Jog Wheel down all through the first download. Everything went fine. I don't know if the Jog Wheel was a factor or if the failure was caused by something else.

Anyway, the second try was successful and my remote is back to normal.

Russ