I have the c5j6 teclast x98 3g 64gig duel boot version. From the start I have been getting throttling errors. I have contacted teclast with no response at all. Geekbuying has tried helping by providing me with a link to update the tablet myself but it won’t update.
Stay away from this Tablet until all the problems are fixed. Way to buggy. Windows shuts down at random and will not turn back on unless I let it sit for 5-10 min. Even then make sure you make a recovery boot USB stick. I had to use mine twice when it shut down by itself when windows was updating.
In android the screen goes dim to thermal throttling ( over heat problem)
If I want to try and fix the issues all myself then I run the risk of a brick and from what I have been seeing on all the forums its a hit and miss. You been warned.