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

krishna kanakasapapathi kkanakas at cisco.com
Mon Jan 13 09:33:06 EST 2014

  All good. Yes, i did get a call from Howard at elecraft.
  I had to get someone to direct connect a serial cable
  and run the Elecraft utility over teamviewer and was able to talk to 
the amp and
  load the new firmware.


On 1/12/2014 3:13 PM, Jim Brown wrote:
> On 1/9/2014 8:55 PM, krishna kanakasapapathi wrote:
>> 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.
> You should be asking this question on the Elecraft reflector, which 
> several Elecraft engineers (including owner-engineers N6KR and WA6HHQ) 
> read every day. It's rare to have to wait more than half a day for a 
> useful response, and I've seen N6KR respond in a few hours to a 
> DXpedition with a problem.
> 73, Jim K9YC
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