MyMPx.org - Firmware ACT2091

I'm looking for firmware ACT2091_S75 9..0.50. Pls. I am in dire need of this firmware. I had tried almost all the actions 9.X.XX firmwares and yet all I have at the moment is a blank white lcd...no other signs of life! What I have is an mp3/mp4 player which is actually an ipod nano clone....has 1.5 inch lcd and cylindrical in structure (don't know how to open the thing....I've tried to unscrew it but I can't get it out of the metal cylinder-like covering).

Pls. help me shed light on this technical problem.

thanks would be greatly appreciated.