Yesterday I connected rx8200 to a new internet router. I don't know why the settings restarted and now every time I restart it there are factory settings. The device does not want to save the settings.
Try to boot the RX8200 pressing and holding the right arrow key on the front panel.
It does mean: press and hold the key, while holding down start the receiver, then release the key when the boot process has begun.
Doing so, the RX8200 loads the second firmware stored in the receiver flash memory.
Doing the same operation a second time, you will be back to the first firmware.
Try this and check what it does happen.