These devices were released around 2012–2013. Most modern apps (like YouTube or Netflix) may no longer work due to outdated security protocols and Android versions.
The WM8850 is not standard Android. It requires a proprietary firmware structure. You cannot flash a generic update.zip from a Rockchip device onto this MID7 motherboard. Attempting to do so will hard-brick the device (unrecoverable via standard ADB).