Make sure that the correct path to the firmware files is shown in the folder.
Select Copy new files from Elecraft server into local folder and then click Check Versions Now to get firmware files from Elecraft.
The required files are:
The following file is required if you have installed and enabled the KRX3 Second Receiver Option:
The KDVR3 Digital Voice Recorder comes with preinstalled firmware. There is no firmware file for the KDVR3.
"hfwnotes.rtf" is required for the K3 Firmware Release Notes Help menu item.
"K3UtilityVersionInfo.txt" is used to determine if the installed K3 Utility version is current.