Rockchip RK2706 (Onda VX747 clone) player dead

[over]

Hi to all.
I have this player: looking for Rockchip RK2706 (Onda VX747 clone) firmware and today is dead.
I've turned on it and I've obtained a red screen, then it was impossible turn on.
I've connected the player to my pc but is impossible to see hidden partition, I can see only partition where is stored musics and videos.
I've tried to reset it, I've copied file rkusb.tag on it but nothing to do. I can't show hidden partition where I can transfer my backup copy of the firmware.
How can I do now?

[over]

Ok, after some resets finally is appeared hidden partition and I've recovered my player

[admin]

Hi over,

So to confirm, you've managed to successfully recover your player?
If you have, it would be great if you can share with us all how you did it.
It's always good to have a SUCCESS story rather than a lot of dead player stories.

I do hope you can share this with us all like how other members have shared with everyone else.

[over]

Simply after copied rkusb.tag on visible partition on player I've resetted it a lot of times and finally hidden partition is becomed visible.