[Elecraft] K3 - stuck at MCU LD we upgrading software

[N2TK, Tony]

I believe this was addressed a while back but so far have not found it.

 

Upgraded firmware from 5.54 to 5.56. The one K3 did it fine. The second K3
is hung up with the TX light flashing and the screen says "MCU LD".

And the USB port is no longer detected. 

 

I sure hope I don't have to do a complete reset that will cause a loss of my
settings.

 

Tnx for any advice

N2TK, Tony