denden_oner , firstly you'll need to extract your friend's player firmware. The guide is here
http://www.mympxplayer.org/how-to-ex...tool-vt66.html
However, the S1fwx v3.1 only support upto v9.0.43, so if your friend's player is higher, you can't extract a working firmware dump.
Next, you will need to perform Dead Player Recovery on the dead player. The guide is here
http://www.mympxplayer.org/dead-play...ide-vt567.html
You will need to see the dead player's processor chip number. The ATJ2085 are using the v3.5.xx series, whilst the ATJ209* series are using the v9.0.xx series.
Depending on the chipset used, you'll need to find a suitable firmware in the downloads/firmware section.