Updating the T4 Pro is not wireless. You cannot do this via Bluetooth or the 2.4G dongle. You must use a wired connection. Here is your checklist:
Press and hold the (press the left joystick down). Gamesir T4 Pro Update Firmware
If you own a T4 Pro manufactured after 2022, it likely features Hall Effect sensing joysticks (which use magnets to eliminate stick drift). Early firmware versions on these units had a "dead zone" that was too aggressive, making micro-adjustments in FPS games impossible. Firmware v3.0+ introduced a linear response curve , fixing this entirely. Updating the T4 Pro is not wireless
Bookmark the GameSir support page. Check for updates every three months. And if you found this guide helpful, share it with a friend who just bought the T4 Pro and is complaining about "input lag" (spoiler: they just need to update). Here is your checklist: Press and hold the
Open the app, go to the "Devices" or "Update" section, and follow the prompts to install any available firmware versions. Troubleshooting
On PC, ensure that other gamepad emulators or input mapping tools (like JoyToKey) are closed, as they can grab control of the device during the firmware flashing process. 3. Change USB Port