[Elecraft] help - firmware hangup

[Bob Cunnings]

I find nothing in the K3 manual or K3 Utility regarding "PWR on/SHIFT
LO". Is this a useful undocumented procedure or just voodoo? Perhaps
the KE7X manual provides a rationale for this action but I don't have
a copy of it, to date the Elecraft manual has been entirely
sufficient.

Bob NW8L

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I have regained comm with the K3 and load 4.51 successfully.

Going through everything, again, I tried the PWR on/SHIFT LO on p 32 of
the KE7X manual. This time it worked. That enabled comm between computer
and radio, etc. So, I think this is working. Thanks again to everyone
for responding. Aside from specific suggestions - all appreciated - just
having the Elecraft community out there was reassuring which enabled me
to keep plugging along. That's as good as any specific suggestion.
Thanks much to all.

...robert