The T4 Pro uses Bluetooth 5.0, but early firmware had well-documented disconnection issues, specifically with Apple Arcade and Android 12+. A firmware update stabilizes the handshake protocol, reducing latency from 12ms to roughly 8ms in wireless mode.
For further help, visit the official GameSir Discord or support page.
Updating your GameSir T4 Pro firmware is the best way to fix persistent issues like gyroscope lag or auto-shutdown bugs. Because this controller supports multiple platforms (Switch, PC, Android, and iOS), there are two primary ways to keep it current: using a PC for critical fixes or using the mobile app for general feature updates. Method 1: Update via PC (Recommended for Critical Fixes)
This method is essential if you are experiencing gyroscope delay or the controller shutting down randomly while in use.
Download the Firmware Tool: Visit the official GameSir T4 Pro Tutorial page and download the latest .exe firmware update file (the latest major update was V1.45). Enter Update Mode: Ensure the controller is powered off.
Connect to PC: Hold down the L3 button (press the left thumbstick down) and plug the USB cable into your PC while still holding it. Gamesir T4 Pro Update Firmware
Run the Update: Open the downloaded .exe file on your desktop and click "Update Firmware."
Completion: Once the progress bar finishes, your controller is updated. This specifically resolves the gyroscope lag often found in older versions. Method 2: Update via Mobile App
For general feature updates and button mapping adjustments, use the GameSir App on Android or iOS.
Pair the Controller: Put your T4 Pro into pairing mode by pressing A + Home.
Open the App: Launch the GameSir App (ensure you are using version 5.3.24 or later). The T4 Pro uses Bluetooth 5
Connect and Check: Tap on your device in the app. If a firmware update is available, a red dot or notification will appear next to the "Firmware Upgrade" option.
Install: Tap "Update" and keep the controller near your phone until the process reaches 100%. Troubleshooting Common Issues
Controller Won't Connect to App: Ensure you have "forgotten" the device in your phone's Bluetooth settings before trying to reconnect through the app.
Failed Update / DFU Mode: If the controller stops responding during an update, try using an older version of the GameSir App APK from GitHub or the official site to re-initiate the handshake.
Hard Reset: If the firmware becomes unstable, use a thin pin to press the Reset button located in the small hole on the back of the controller to reboot it. Tutorial: How to use GameSir T4 Pro For further help, visit the official GameSir Discord
After a major firmware update, it is highly recommended to recalibrate the joysticks and triggers to ensure the new sensitivity settings are applied correctly.
Do not skip this section. A failed firmware update can temporarily "brick" the controller. Preparation reduces risk to zero.
You will need:
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: