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Open the app, go to "Device," and select the T4 Pro.

The GameSir T4 Pro is a multi-platform wireless controller (Switch, PC, Android, iOS). Like many modern controllers, its firmware controls:

Tap on . If a "New Version" is detected, follow the on-screen prompts to start the update.

To update the firmware of your GameSir T4 Pro Go to product viewer dialog for this item.