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You want to see a new feature ?
You found a bug ? Denon Avr-x520bt Firmware Update

Please let us know on our git . (registration required) Denon AVR-X520BT updates its firmware exclusively via the

Denon Avr-x520bt Firmware Update May 2026

Denon AVR-X520BT updates its firmware exclusively via the on the front panel. Unlike higher-end models, this receiver does not have a built-in network connection (Wi-Fi or Ethernet), so you must manually download the update files to a USB drive to perform the process. Update Requirements : Must be formatted in FAT16 or FAT32 Preparation

If you want, I can:

Download: Visit the official Denon Support site to find the latest firmware file for your model. If you cannot find the file online, contact Denon Product Support to request a download link. 2. Update Process

Method 3: Via the "Denon 2016 AVR Remote" App (Legacy)

Note: The dedicated Denon AVR Remote app for the X520BT is no longer actively developed for newer iOS/Android versions, but if you have an older device with the app installed: