USING THE STRAP EDGE
As always you should head over to the official support page to download the latest firmware files.
Just connect your Strap Edge via USB-C to your computer install and launch the firmware update tool and wait until the update is over.
Once the update is completed you will need to unplug your Strap Edge, use a small pin to click the reset button (found next to the audio input port) and turn it back on.
To properly calibrate your Woojer Strap Edge i suggest heading to their YouTube channel to check the video that helps do exactly that.