Nope. I understoood that this ROMs are ready to go with right kernel already in it. I guess I misunderstood posts on previous page.
I've opened the tablet and chips are hidden under EMC shield which is soldered. (BTW kinda crappy design, lots of empty spaces, batteries could be larger and whole thing could have better screen-to-size ratio with small design changes...) I'll try desoldering it (but not today 🙁 ) and see what can be found, maybe some "hardware reset" like shown in this video is possible?