I have the same tablet but it didn’t work from the start. When I turned the WiFi on it went into a reboot loop.
So I tried to flash it with the firmware in this thread. First using SP flash tools and managed to brick it, maybe after incorrectly formatting it?
Then successfully flashing using BeToolS but now it doesn’t boot with the error message “uninit failed”.
I’m totally new to this so it has taken me ages to get this “far”.
Please help! Thanks.