[Elecraft] KRC2 F/W Upgrade - problems

[Marcus Busch [DL1EKC]]

Hi Elecrafters,

just decided to upgrade my KRC2 firmware from V1.0 to V1.3.

I installed the KRC2 Download Utility V1.1, connected my KRC2 to the PC, 
set the switch to download. Then I made the following:

- Press button "Get F/W Rev."
- KRC2 responds "V1.0"
- selected the HEX file
- press "Download KRC2", KRC2 LED starts flashing
- program says "KRC2 failed to reply" (well, it did before ?)

After trying this several times I decided to switch off Options/Ack Req'd 
and started again. Now no error message comes up, but ...

NOW MY KRC2 IS COMPLETELY DEAD. Upon power-on the LED comes up in DIM 
mode, but nothing more happens. It doesn't set any outputs nor does it 
reply on button presses.

Well, I think, my KRC2 lost its brain. I have a programmer available. So 
no difficult task to flash the MCU directly, but the HEX-file supplied 
seems to be a somehow modified INTEL HEX file. What do I have to do in 
order to put life back into the MCU ?

Your help is very welcome.

VY 73 de Marcus, DL1EKC