Well, this might surprise you but i just got it from Target, for $10 AUD.
I have not been able to backup anything. I cant get to the hidden partition and have tried using RK27xx tools. None of then recognise the player.
I tried at least 6 different "magic" empty files to get to the hidden partition but nothing worked. I used all the files at the same time.
THANKYOU so much for the software. It is definately compatible with my MP4 player. Now i need to get it into DFU mode or somehow get that damn firmware partition.
Edit: Its driving me crazyyyy! Cannot get to the stupid secret firmware partition!!! I have a collection of rochchip software but none of it works without that partition!