[Elecraft] K3 died while attempting firmware download

[Gary Nichols]

Help please.I killed w8uvz's K3 while trying to download current firmware.
The computer attempted to download three times and then became
non-responsive.  I could not power down the K3 so I turned off the power
supply.  When re-applying power the TX light is blinking and only MCU LD
appears on the screen without backlighting.  How do I get back to a working
radio from here?  Thanks, de gary, kd9sv