[Elecraft] Firmware upgrades using Ubuntu 12.04

[KC6D]

I had trouble getting the KX3 Utility program to communicate with the radio
in Ubuntu.   Here's what solved the problem for me.  I take no credit for
figuring this out, these were postings by others that I found in three
different places.  I decided to collect the details here so they'd be all in
one spot.  Hope this helps someone.

The FTDI drivers for the USB cable provided by Elecraft are a native part of
Ubuntu 12.04 and do not need to be re-installed.  Just plug the cable into a
USB port.

I found these two additional steps are necessary before the Utility program
will successfully operate:

(Run in a terminal)

     sudo chmod 666 /dev/ttyUSB0

     sudo apt-get install curl

The first command is necessary to permit all users of the computer to access
the "serial" port ttyUSB0.  Note: the last character in USB0 is a zero. 
Without this command you will get an error message telling you that the KX3
Utility program can't communicate with the port.

The second command installs the Linux function "curl" which enables Ubuntu
to automatically communicate with and download from the Elecraft (and anyone
else's) FTP server.  Note: the last character in "curl" is the letter L in
lower-case.  Without this command you will get an error message stating the
KX3 Utility program is unable to connect to the Elecraft FTP server.

Once I did the above the Utility program ran smoothly and the firmware
update and other functions all appear to work.  

             Don  KC6D


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