: If the controller isn't recognized, try a different USB port or cable.

Reduces input latency on both PC (2.4GHz dongle) and Nintendo Switch (Bluetooth).

If an update is found, click . Keep your controller close to your phone and ensure neither device powers off during the process. The controller will restart automatically once the installation finishes. Alternative Method: PC Firmware Installation

Go to the official GameSir T4 Pro Tutorial Page and download the latest firmware updater ( .exe file). Prepare the Controller: Turn off your T4 Pro.