Just went to update it, and it is saying that officially the latest update it has is 4.4.2, which is like getting towards 5 years old. As far as i can tell, there isn't anything explictly preventing the tablet having a 'better' version of Android on it.
My solution: I've copied the update.zip to the internal stroage /root/download/ and to the external SD Card /root/. First reboot into the "recovery menu" I've selected "update from internal storage" and selected the update.zip file.
ok8TAA.