Hi Knob,
I used rkusb.tag and saw the hidden partition.
I then copied the files from our original firmware :
Download Rockchip Firmware: Rk2706 Player from Tinydeal - MyMPx
The player still goes RED
The player I bought from tinydeal is exactly the one you have (btw it is a RK2705 inside, not a RK2706).
I have no clue what i am doing wrong.
When the screen is RED, two drives still show up.
One is empty and has 60MB free
One is full with the hidden partition stuff but there are no files in SYSTEM and no files in SYSTEM00 directories !