The controller failed to update the firmware, resulting in its inability to be used.(Quest Pro)
Just two weeks ago, my two controllers encountered an error where they couldn't update their firmware. Inside the VR headset, it displayed "Controller firmware update failed," and in the settings, it showed "Controller not connected," making both controllers unusable. To get them working again, I used the "Meta Horizon" app to unpair the controllers and then re-paired them. However, most of the time, it would show "Controller firmware update in progress" and then just keep loading indefinitely. After many attempts, occasionally the VR headset would connect to the controllers, but it still showed the firmware update failure. Moreover, if I restarted the VR headset, the controllers would return to the disconnected state. On my "Meta Horizon" app, it would show that the controllers were all right, but they still couldn't be used.