10. How to update the firmware of BTR7?

Online upgrade：

Connect the BTR7 to the mobile phone via Bluetooth. Download the Fiio Control App on your phone. On the BTR7 page, click the settings pattern in the upper right corner, find "Firmware Upgrade", find "Online Upgrade" and click it. If BTR7 has available Bluetooth firmware, a pop-up window will prompt you for the new version. Click OK to upgrade.

Local upgrade:

1. Import the "BTR7_Vxxx.bin" firmware into the mobile phone;

2. Connect the BTR7 to the mobile phone via Bluetooth. Download the Fiio Control App on your phone. On the BTR7 page, click the settings pattern in the upper right corner, find "Firmware Upgrade", find "Local Upgrade", select the firmware imported to the phone, and start upgrading the firmware.

Please note: During the firmware upgrade process, please do not leave the upgrade interface, otherwise the upgrade may fail! The upgrade may take a long time, please be patient. If the upgrade fails, you can try again.