I haven’t seen anyone reporting that they have successfully done it, in the past half year that I’m following Hi8 Pro related forums.
Perhaps single OS cannot be transformed into android only. There’s also a good chance that single OS and dual OS tablets are different inside.
There’s a great chance of bricking it. But hey, you could do it… for science? Seriously, unless you have one of those professional programmator thingies, don’t even try.