Below are links to the current firmware versions for the HHa transmitter. Note that the HHa and HHa/E01 models require different firmware loads. The HHa is sold in the US and Canada; the HHa/E01 is sold in the European Union. Be sure to download the correct update file and double-check before installing!
These are zip files, after downloading extract it into a temporary folder. Use the USB Firmware Updater program to update firmware.
Please note: version 6.x firmware for the HHa is for use only in new product shipped after October 13, 2018 to US customers. These will bear the following new FCC ID numbers:
These ID numbers indicate conformance to the ETSI standard now in effect for wireless microphone transmitters in the United States and Canada. Here the "Nu Hybrid" compatibility mode replaces the old "400" mode used in previous versions of the product.