[Amps] KPA500 Stuck in MCU load - after failed upgrade attempt

[krishna kanakasapapathi]

Folks,
  The KPA500 is in a remote setup and i tried to upgrade from 1.23 to 
1.33 over the remote setup.
  The connection dropped and the amp did not recover.
  The On/Off front panel does not respond. Power cycling the amp has not 
made it go back to the
  older version either.
  The front panel display says "MCU Load".

  I am going to call Elecraft tomorrow, but thought i will drop a note 
to check if anyone has the magic
  procedure to recover.

  TIA

73s
krish
w4vku