If it’s MTK version, you should be able to flash boot.img using SP Flash Tool. You can download it from HiPad Pro LTE (MTK) Stock Firmware - #8 by Blueforcer but use your own boot.img instead of the one provided.
If it’s MTK version, you should be able to flash boot.img using SP Flash Tool. You can download it from HiPad Pro LTE (MTK) Stock Firmware - #8 by Blueforcer but use your own boot.img instead of the one provided.