K3S dead after Attempted Firmware Update

[Elecraft mailing list]

K3S # 1059x, Windows 10,

I noticed there was a newer firmware update available and a newer Utility
program.

I downloaded the latest Utility & also downloaded the newest firmware files
to the laptop & then attempted to connect with the K3S using the USB
connection.

It would not connect, but according to Device Manager the FTDI chip in the
USB cable was working OK on COM3 but still no connection was made to the
K3S.

 

I then attempted to Force a Firmware Download as per the K3S Owner's Manual.
I unplugged the radio, waited 5 seconds or so, plugged the power back in &
held the POWER switch in for 10 seconds The TX LED started flashing
continuously & I saw MCU LD on the LCD screen. I then attempted again to
connect the K3S using the Utility program but no connection was able to be
made.

I switched off the power to the K3S & decided to try again.

Now I can't switch the K3 ON or get back the flashing TX LED by holding in
the POWER switch, its all just dead.

I haven't tried the dreaded RESET as I don't think there is a saved Config
file.

What now, any ideas please?

Ray G3XLG

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