[Elecraft] K3 - stuck at MCU LD we upgrading software

[N2TK, Tony]

Hi Don,
Tnx for the advice. Rebooted the K3 and the PC. But what I had to do
additionally was hit "Close Port" on the K3 Utility. Then hit "Test
Communications". That set things straight for me to load the firmware. Not
sure why that problem happened in the middle of an upload. But all is fine
again.

73,
N2TK, Tony 

-----Original Message-----
From: Don Wilhelm [mailto:donwilh at embarqmail.com] 
Sent: Saturday, January 28, 2017 1:55 PM
To: N2TK, Tony <tony.kaz at verizon.net>; elecraft at mailman.qth.net
Subject: Re: [Elecraft] K3 - stuck at MCU LD we upgrading software

Tony,

The usual reason for that is a glitch in the computer.  The fact that the
USB port is no longer detected points more to the computer than the K3.

Re-boot the computer, and see if it detects the USB adapter - that has to
happen first.  Even if the USB port is internal to a K3S, the same thing
applies, you must get the computer to recognize the USB adapter and assign a
COM port to it.  If the port is internal to the K3S, power cycling may help
as well.

Then follow the instructions to "Force a firmware load" in either the manual
or in the K3 Utility Help file.

73,
Don W3FPR

73,
Don W3FPR

On 1/28/2017 12:27 PM, N2TK, Tony wrote:
>
> Upgraded firmware from 5.54 to 5.56. The one K3 did it fine. The 
> second K3 is hung up with the TX light flashing and the screen says "MCU
LD".
>
> And the USB port is no longer detected.