Ok, thanks, the best solution here is to get ACPI tables from BIOS, change them, check correctness by using a bootloader that is capable of replacing ACPI tables (I’ve used Clover Bootloader for that) and than reintegrate this new tables back into BIOS benary, if all works as expected.
Can you boot your tablet into UEFI Shell? If so, you can dump your BIOS using Intel FPT for BayTrail and we can study it to see where and how exactly are the ACPI tables stored there.