[Elecraft] MCU LD message

[Larry - K2GN]

I've got my K3 S/N 3278 hung up.
Sparing the details of the story, I was testing the K3 Util software when it happened.
I probably tried to load the firmware and shouldn't have.
I've followed all the reset instructions in the help files and manual.
Including removing power etc etc.
Nothing is working.

Anybody else ever get this and how do I get out of it?

Thanks
de K2GN/Larry