VX858 clone firmware for my player

[skat325is]

Hi guys, i just joined your forum. Lots of nice info here.

I was wondering if someone could point me in to the right direction. Are there firmwares available for my MP4 player? . I have a VX858 clone with the following chips on the board:
-------------------
Rock Chip
RK2608A
B85870 0809
-------------------
Samsung 813
K9HBG08U1M
PCB0
CSAM41PC
-------------------
IS42S16100C1-7TL
ISSI
A0H540000N 0812
-------------------
SPT
SP3767AHN
08AS05
-------------------

Thanks in advance!!

Edit:
This is the player with the Mini MP4 Start-up screen and Goodbye Power-off screen.

Firmware version: 00.00.0001
Date: 2007-12-11