Updated: Denon Avr-x520bt Firmware Download

: Use a FAT32 formatted USB memory device. Do not use a USB hub or extension cable, as this can cause data corruption.

Press the button on your remote control to open the on-screen menu. Navigate to General > Firmware . Denon Avr-x520bt Firmware Download

: Place the unzipped firmware file into the root directory of the USB drive (not inside a folder). Insert and Initiate : : Use a FAT32 formatted USB memory device