Tools needed: 1 empty U disk with a capacity of less than 32G


The operation is as follows:

Download the file(English version)

Download the file(Japanese version)


1:Put the file “XY692X.BFU”   to the U disk.


2:Turn on the amplifier, plug in the power, and connect the speakers.

Insert the U disk.

After the upgrade is successful, there will be a "ding-ding" sound.

The process takes about 8 seconds.


3: After the upgrade is complete, unplug the U disk and reboot.


Note: Please format your U disk after the upgrade is complete, otherwise it will affect your other devices.