Hi Paikan;
We missed out one single point
ops:
You don't have a Glacier like player !!!
This is a Glacier like player :
http://www.dein-onlineshop.eu/images/ac6b_3.JPG
You don't have to un-solder the battery at all in that case. You only have to find out which player do you have in order to get the right firmware. You player is OK, the memory hack has been deleted so far. He is now ready to upload a firmware. But the Glacier firmware can't work if your player is not the same as the one on the link above.
Check the Gallery in order to find out what kind of player you have got, and then search for it in the download section.
I think you are near the goal 8)
keep contact
Best regards
Jim