forceofhuha , you'll need to open the player and identify the processor's serial number (eg ATJ2085, ATJ2091, ATJ2097).
For the ATJ2085, you'll need the v3.5.35 or v3.5.37 firmwares.
For the ATJ209* series, you'll need the v9.0.43, v9.0.48 or v9.0.50.
These firmwares can be downloaded from the downloads section.
If the Upgrade Tool does not reconigse your player, then you'll need to perform the Dead Player Recovery Guide here
http://www.mympxplayer.org/dead-play...ide-vt567.html