Hello dear Barman
I have the same problem, but I cannot recover my mp3 even as or even a data traveler USB device .
I asked the seller for original firmware and they sent the attached file for me.
Unfortunately I can not recover my player(because its dead and can not be upgraded by upgrade tool ) , when I used this firmware file, the updater program answered :
>> Invalid upgrade firmware file <<
It didn't work on my player but may be it can help you.
here is my player information:
1GB AdHoc Mp3 player ( no FM)
Model : M7810
firmware version : 9.1.51.0000 date: 2007/04/02
mp3 player chip info : ATJ2091N
memory : HYNIX KOR HY27UT088G2M
BOARD ID : AT91- 018 V2 date: 2006 - 09 - 28
Would you please send for me the firmware which by that you recovered your player to a a reversed lcd and key player ?
Thank you very much