If you have S905X SoC and want to try -ng builds, the ATV ROM its still available here: ATV4 S905X ROM
Also, you could try this ROMs Aidan’s ROM. I used them only to install the bootloader and after that I manage to erase Android and write CE on emmc. Just the upgraded bootloader was necessary for me to run CE 19 on old Bqeel S905X box.
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