I did use a stylus. But still the calibration screen never end. Why?

Here are 3 firmwares which are from the same type of player as yours, no guarantees they will work any better though, you may have a hardware problem, a lot of these players arn't very well made i'm afraid. :(

http://www.mympxplayer.org/rockchip-...e-2-df907.html
http://www.mympxplayer.org/rockchip-...one-df906.html
http://www.mympxplayer.org/rockchip-...706-df897.html

Touchscreen conductive strip has become loose or touchscreen is damaged. Hardware problem for sure, and not really worth fixing.

Hi everybody, thank you all! After re-installed firmwares and tried different ones many times, I suddenly found a post mentioning that Silicone case is a bad one for MP5. I used Silicone case, but one day it seemed pretty wet. Finally I figured out that it is caused by Silicone case which makes the MP5 very wet during playing. This makes the touch screen not working at all. After these days, I have stopped using Silicone case and let it dry for a few days. Now it works!

Amazing....

Thanks for letting us know, and glad your player works again. :D

Just use a protective foil for your touchscreen and ditch the case.

Hi amyjohnson,

Thanks for taking the time to post to say you have resolved your issue.

It's a good thing you did as I didn't know that and will definitely keep it in mind.