bobrules, Ok , if the player is not being detected then you will need to do a hard reset by shorting the memory chip. This is outlined in the Dead Player Recovery Guide but you may find the guide at s1mp3.org better suited to your type of player. Although the guide we have here is exactly the same process it is done with a video enabled MP3/MP4 Player. have a read of this guide:
http://s1mp3.org/en/docs_deadrec.php#top
s1mp3.org also has a larger selection of firmware for your type of player so you may have better luck finding a suitable replacement for you players original version. You will find their list of firmware here:
http://s1mp3.org/en/downloads_fw.php
The recovery process is not perfect as the hardware and firmware variations are many, your only option of finding a working version for your player is to try as many as you can find. In doing this your player may continue to need to be reset from time to time as it will no doubt stop responding again.
Hope this helps and keep us posted of your progress. If you have more questions we will try to help as much as we can but the outcome really depends on being able to find a compatible firmware.
PS check the mini cd that came with your player as sometimes a full copy of the firmware is included. It will be either a .bin file or a .fw file approx 4-5 MB in size. You could also email the seller as if he still has stock of the players he may be able to extract a dump for you from one of his players and send to you. This would greatly increase your chances of a full recovery.
The extraction process is outlined here:
http://www.mympxplayer.org/how-to-ex...tool-vt66.html
s1fwx can be downloaded here if you need to give the seller this info.
http://www.mympxplayer.org/s1fwx-31-df417.html