[knob]

I had a look at these players and they do look just like the teclast c260, I thought about getting one myself.

There is a problem that I suspect that the touch screen is software(firmware)
driven and so is much more easily disabled that the usual buttons.

There are also leds in the controls hence the extra current required (guess)

Extra care is needed as another version of ConsumerUpdate is probably involved to support the touch screen.(another guess)

Rockchip processor itself has a small amount of memory space (fact) , possibly for hardware support (now this is another guess) that would explain why some problems persist even after firmware changes.
All interesting stuff, but it makes messing with firmware on the touch screen even more risky.

I think the lesson is as always. if you can't afford to lose it leave it alone if it's working ok.

I (and makd511), am unable to resist having a play until I break it (which just gives me an excuse to buy another player!) --- now I know what a mpxjunkie is.....