Elecraft KX3 Utility
The 126.96.36.199 version of Elecraft KX3 Utility for Mac is provided as a free download on our website. The software lies within System Tools, more precisely Device Assistants. This free Mac application is a product of Elecraft, Inc.
From the developer:
The Elecraft KX3 Utility helps you update, configure, and use your KX3. When selected, a number of check boxes are shown on the Firmware page that are not normally required for firmware update. These check boxes are generally used by Elecraft for development, manufacturing, and test. It may be helpful in some troubleshooting scenarios.
You may want to check out more software for Mac, such as Concept2 Utility, Simple Backup Utility or WFT Utility Installer, which might be similar to Elecraft KX3 Utility.