What image is best for my DM800seV2 original box? It says boot loader #89 on the LCD when it's switched on. I have mgcamd sub ready to use.

I have tried all BlackHole images and it says "invalid image" during flashing. I tried OpenPLi image; that flashed okay but couldn't get the mgcamd to clear any channels.

Any advise will be greatly appreciated. Thanks.