Yes, this is the way, and it's Just another day in this forum.
how about linux dualboot in this tablet?
Check if one of this round cooper pads are GND with an multimeter
and chech if one of this round cooper pads are CLK with an osciloscope
if it is,
1- short it and connect USB,
2- release short
3- flash
4- develop a kernel Device tree for it
5- post here