[Elecraft] K3 Frozen

[W5UN]

My K3 is frozen after attempting to load the latest firmware. The red 
TX LED is blinking and the display reads "MCU LD" with no back 
lighting.  No buttons respond, and removing and reapplying power 
brings back the same frozen state. I have searched previous emails on 
this reflector, and have found no workable solutions. Any ideas?

The K3 communicated OK with the computer prior to attempting the 
firmware update.

Dave, W5UN