Check your exact model/version number on the panel or in the menu before updating. Installing the wrong firmware can brick your receiver — never power off during flashing.
How to update
Download the firmware file and copy it onto a USB drive formatted as FAT32.
Plug the USB into the receiver's port and open the Software Upgrade / USB Update option from the menu.
Select the correct file and start the update — do not power off during the process.
The receiver will restart automatically once the update completes.
