Help me please ! Mp4 Rockchip Firmware
 

I have install a wrong firmware to my Rockchip Mp4 Player ,And now no any firmware can use to recover it , Please help me find a right firmware .

I not sure about firmware version 0.5.01 ,0.5.0 or 0.5.1
FW Date is 2007.1.09 ( I not sure too )

but my Rockchip's chip is RK2606A

My Mp4 Player is

Xcess MC210 ( XSMP 210 ) - 1GB No ( Memmory card )
2.0"262k colors TFT Screen

If can't find this firmware. Please tell me how I can recover it