According to the DJI FAQ (item #13) the CrystalSky monitors will not accept 3rd party apps, a severe and possibly fatal limitation for something intended for professional use.
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Even if it is ever rooted it probably won't stay that way for long. Since DJI display devices update both the OS and applications as a single action then DJI can simply patch the exploit at the next update.I wonder how long it will take for someone to root it.