So I bricked Mecool KII Pro S905D by flashing wrong custom ROM. Been trying for last 2 days to flash it using USB burner but every single time with every .img it give uboot/partition boot/verify partition/error result.

Please me saving my device. I have tried 3 different .img but not single one succeeds. Where can I find the latest(2018-12) update's or stock firmware's usb burner .img? Only OTA zip of 2018 can be found. Some please help me. Please...