Sony has launched a new application for Windows that lets players update the firmware on their DualSense controllers. Until now, the only way to upgrade was to connect a controller to a PS5 console.
https://www.notebookcheck.net/DualSense-controller-firmware-can-now-be-upgraded-directly-via-a-PC.614660.0.html
Still useless. Until Sony supports its DS controller *wireless* adaptive triggers, etc., for PC, our family won't purchase any extra DS controllers. 👎