HD815 Bluetooth Digital Audio 5.1 Decoder Upgrade Program

Note:

Please check the model carefully before upgrading the software, and reconfirm whether you need to upgrade the software. If you do not need to upgrade to solve the problem, please carefully choose to upgrade by yourself.

2. If the upgraded firmware model does not correspond, it will cause the product to crash and must be returned to the factory, and the chip needs to be reset with a computer.
3. The product upgrade process will take about half a minute. If the upgrade is interrupted during the upgrade, it will easily cause the chip to be upgraded to half of the CPU not working, and also need return to the factory.

This upgrade removed the boot prompt sound: Upgrade method:

1. Format the U disk into fat32 format

2. Copy rootfs.sfs, uImage, etc. to the U disk

3. Plug into the USB port of HD815 decoder, and then power on again.

5. It will be upgraded automatically, about one minute, until the blue light turns on. 3

. After the upgrade, you need to delete the rootfs.sfs, uImage of the U disk, otherwise it will be upgraded every time you power on.

Upgrade procedure:

http://www.aoyint.com/software/HD815BTupdate.zip