24. How to update the XMOS firmware for BTR17?

Note: Before upgrading the firmware for BTR17, please unplug other decoders from the USB interface on the computer, otherwise the upgrade may fail!

1. Install Windows USB DAC driver:

https://forum.fiio.com/note/showNoteContent.do?id=202105191527366657910&tid=17 

2. After the BTR17 is turned on, switches the mode toggle switch on the right side  to 'PC' mode. In settings, adjust USB mode to 2.0. Then connect the ‘USB’ port in BTR17 to the computer.

3. Double-click to open the "FiiO_Dfu_BTR17" upgrade tool, as shown in the figure below:

4. Click "Start". When "Firmware upgrade finished successfully." is displayed, it means that the XMOS firmware upgrade is successful.