sedes , if MP3 Utilities Upgrade Tool does not recognise your player, then you will need to perform the Dead Player Recovery
http://www.mympxplayer.org/dead-play...ide-vt567.html
Next, depending on your chipset, the ATJ2085 would use the v3.5.35 or v3.5.37, so you need to try all of them.
The ATJ209* uses the v9.0.xx series, which at the moment has very limited firmwares.
If your player is still under warranty, i'll suggest you contact your seller for exchange or refund rather than going through the recovery process, as it might take very much longer.