Many updates will wipe your custom calibrations (speaker levels, etc.), so write down your settings before starting.
: Do not turn off the power or remove the USB device during the update, as this can corrupt the firmware and make the unit inoperable. Time Requirement : The process can take approximately to complete. Remote App : While you can use the Denon 500 Series Remote denon avrx520bt firmware update top
Even with the latest firmware, you cannot update the hardware limitations: Many updates will wipe your custom calibrations (speaker