Below is the instruction for the firmware update of BT remote control and you could learn more from this video.
1. Download the “OnyxDFU-release” apk from our official website and install it on your Android phone or tablet.
2. Open the “OnyxDFU-release” App on your phone or tablet and then select the Bluetooth remote control at first step.
3. Make sure that you have opened your phone or tablet's Bluetooth first, and then please kindly click any button of your remote control.
4. After the phone has paired with the Bluetooth control successfully, then click the “Update” button to easily update to the latest firmware. Or you are suggested to click this link to download the app for update the firmware of BT remote control. https://www.boox.com/boox-assistant/
5. Then you could try to repair the remote control with your Boox device.