fantastic , you can try to use the Waterlily software, but i'm not sure if it supports v9.0.50 firmwares.
Download here http://www.mympxplayer.org/waterlily-v1-727-mb-df256.html
Next, install and open the firmware file that was able to recover your player.
If Waterlily supports your version, you should be able to load the firmware properly, and select the FM function, and as well the default language.
If Waterlily does not support your version, then there is nothing you can do about it.