I replaced the K3 USB-Serial adapter with a TrippLite Keyspan USA19-HS USB-serial adapter. The MCU firmware loaded the first time. I haven't taken the time to troubleshoot the problem, so it would be inappropriate to speculate what the root cause was. YMMV. 73 Don NA6Z K3# 5495
>________________________________ >From: Don Putnick <[email protected]> >To: Elecraft Mailing List <[email protected]> >Sent: Saturday, September 10, 2011 10:07 AM >Subject: MCU load failure; K3 not responding error message > >My factory-built K3 came with firmware version MCU 4.36 / DSP 2.73, 4-20-2011. >I'm using the latest Mac version of the K3 Utility, MAC OS X Version 1.4.1.8 >March 11, 2011. I've been able to save configurations, configure filters, and >restore configurations with no problems. >I just tried to update my firmware for the first time to the latest production >version MCU 4.39 / DSP 2.73, July 6, 2011. The MCU firmware failed to load, so >I tried to force a download per the manual. At that point I got the "K3 is not >responding" error message. I did a factory reset, and was able to reload my >latest configuration. I repeated the firmware update, with the same errors. >I've also tried reinstalling the K3 Utility and downloading the firmware >again. No ceegar. >I'd appreciate any suggestions. Thanks much. >Don Putnick, NA6Z >K3# 5495 > ______________________________________________________________ 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
