[Elecraft] KX3 Firmware update trouble

[Dave Sublette]

We were doing a firmware update (my son and I). All went well until the KX3
became stuck in the MCU LD condition.  We followed the manual instructions
(several times).

The KX3 is still stuck and the computer cannot find the KX3 port.  The
computer recognizes the cable, but communications fail with the KX3.

We have rebooted the computer and restarted the KX3 utility without
success.  The Kx3 utility is the latest.  We successfully downloaded it and
installed before we started.

What can we do next?

Dave, K4TO