Robert, I have not had the experience doing this, but on page 13 of the KIO3B update manual, it instructs how to force a firmware download using the USB port by temporarily moving the internal slide switch to the USB position.
’73 de JIM N2ZZ -----Original Message----- From: Elecraft [mailto:elecraft-boun...@mailman.qth.net] On Behalf Of ROBERT KIMPEL Sent: Monday, February 08, 2016 10:41 PM To: elecraft@mailman.qth.net Subject: [Elecraft] KIO3B Upgrade Kit for the K3 I just completed the install of the KI03 update to my K3 SN 4843 and guess what? I forgot to update the firmware to the latest version (4.86 now). The PC won’t talk to the K3 through the USB! Do I need to restore the old boards and then update? I am watching for your HELP! Rob, KJ6ILO ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to jboehne...@yahoo.com ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com