No specific info about version 3.1. Please visit the main page of WDFirmwareUpdater on Mac Informer.
The XSKey Updater, an easy-to-use tool that can analyze your XSKey.
The Bragi Updater enables you to perform updates of your Dash.
SPOT Device Updater allows you to update the SPOT Trace firmware.
This app allows you to update firmwares for Arduino based devices. This
ZOOM G3v2 G3X System updater allows you to update your G3v2 G3X device firmware.