MP4 Firmware LSC_91N217H4_A2
 

I have a MP4, and I want to upgrade the firmware. It looks like this: YouTube - MP4 player (4GB 3rd gen silver shown)

Same exact in that video. And the firmware is the same also.

http://www.upffs.com/Slayer/IMG0085A.jpg
Thats the image of the firmware.
It says

LSC_91N217H4_A2
2008-01-03
9.1.52
2005-01-09

I tried to find a version similar to that, but i found a A1 at the end.. I didnt know if i could use that.

Please tell me if there is a version available to upgrade. Thanks.