[sergejskr]

okay! Why is it not ideal to use the Plex addon in Kodi with Zidoo? Then, If I want to play my local videos stored on a NAS with the highest possible quality, I Will use ZDMC with SMB protocol or how? Thank you!!

On the Zidoo X9S you cannot just install Kodi from the Google Playstore and get HD audio, 4K HDR, deinterlacing and everything else working properly, because the Chipset used in the device has no Firmware support for Kodi's hardware acceleration - Mediacodec - to give you such features. I believe there is no IEC61937 audio support in Firmware either for native HD Kodi Audio.

So the external - NATIVE Zidoo player (Realtek player) App has to be called from within Kodi (or ZDMC in the X9S case) to provide such HD audio, 4K HDR & deinterlacing etc support. This is where life starts getting complicated if you get too demanding with this dual ZDMC / Zidoo Player software approach...

Such as trying to use 4K HDR Plex which would need direct play support. So now you have three things in the mix. ZDMC (Kodi), Plex and the NATIVE Zidoo player (Realtek player) App. What could go possibly go wrong ?

Are you sure you know what you are getting into ?
This ZDMC (Kodi), external Ziddoo Player software approach is NOT the ideal way to run Kodi at all - it simply adds an unnecessary layer of extra complication if all you want is a pure Kodi experience. Big TIP - keep it simple.

It is also why 4K HDR, HD Audio boxes like the AMLogic S905X, S912 are popular because they are optimised from the ground up to run Kodi as bug free as possible without extra, un-neccessary complications like external software players or the Android Operating System overheads.   

Agree w/@wrxtasy in that if you want auto refresh/resolution/colorspace switching but don't need 3D MVC support, LibreELEC (or now CoreELEC) may be the better way to go. But, this depends on what 4K display you have. If you have a 4K projector like me w/only 4:2:2 support, then for now, neither LE nor CE are viable options.

Also, if you don't need HD audio, consider Apple TV 4K with MrMC (Kodi fork).

I do not need Kodi or Plex, I asked if they are compatible with Zidoo these Apps (kodi, Plex) for knowing .. Because with the native App of Zidoo "home teather" or ZDMC I can connect to my NAS and see everything the same, right?, benefiting: auto refresh/resolution/colorspace switching.

I have decided to buy Zidoo beacuse the RTD chipset gives better image quality than the AMLogic 905D for example.

And another thing... Ziddoo have issues with 10bit HDR content with Banding? (http://forum.zidoo.tv/index.php?threads/...8800.8366/)

I thinking buy the new Dune 4K Pro (with auto refresh/resolution/colorspace switching too) and the mark is first level in image also, no?

Once again, thank you both for solving my doubts  

In regards to bandings, you need to be very careful on relying someone feedback about that, from my own experience and being a member of avsforum for 6 years, calibrating many projectors and learning the curve, I can tell you for sure 80% of users don't understand how to setup TV or a projector correctly regarding the colorspace. 
So I've tested Zidoo x9s with my SONY VML-VW760ES/VW885ES and there are no banding issues at all, so far the picture quality is absolutely the same as OPPO UDP-203 throws out, I didn't run specific tests yet like chroma sampling and other test patterns, but if you calibrate your unit correctly you shouldn't see the bandings. I'm pretty sure others people feedback about banding, was related to their PJ or TV settings not being able to provide good HDR along with BT2020 colorspace and HDR Gamma handling, that's why for instance you should use Tone Mapping as at the moment its best viewing experience than using native Gamma Handling of any Projector or a TV. Now there are many ways how you can achieve tone mapping, but I have Lumagen Pro 4444 and it does the job perfectly. Colours are superb, no bandings all details are present and its crispy as hell.