To restore the firmware, follow the procedure in K3 Utility Help, Troubleshooting, MCU Boot Loader.
That should get past the MCU LD on the LCD screen. 73 de Dick, K6KR -----Original Message----- From: Elecraft [mailto:[email protected]] On Behalf Of German Duran Sent: Sunday, September 18, 2016 09:38 To: [email protected] Subject: [Elecraft] Elecraft K3s transceiver blocked MCU LD Dear friends: My new Elecraft K3s is blocked. When I open the box, connect power supply, in the display appear HIGH SIG. It was not possible HIGH SIG dissapear, I tapped CONFIG, I looging for a solution and nothing. I want resetting the radio hold in shift knob while pressing power on switch unit and now the radio shows MCU LD, and is totally blocked. I didn“t save the original configuration from factory before to start configuratio. There is not possible communication between radio and computer. What can I do? German HK3J ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[email protected] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to [email protected] ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[email protected] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to [email protected]

