xxMDxx , S1fwx would not work as the firmware in the player has either been deleted or corrupted. Also, S1fwx only supports upto v9.0.43, so you can't extract it even if it was working.
What i'll suggest is to try all the v9.0.48 firmwares here
http://www.mympxplayer.org/actions-9...ware-dc37.html
If it does not work, try the other v9.0.43, v9.0.50, 9.1.50 firmwares as well.