Hmm ok because I dont have a DM800HD,mine is a dm800se,then I would say you need to find an image to match your bootloader/sim version,
when you boot your box watch the little screen and see if it says what sim and bootloader is already onboard m8,
and we dont mind helping once you realise it can still all go wrong even if you follow the instructions to the tee,but you wont brick your box it can be recovered so no stressing,also we may not always be around to answer as quick as you would like but we will get you up and running eventually
when you boot your box watch the little screen and see if it says what sim and bootloader is already onboard m8,
and we dont mind helping once you realise it can still all go wrong even if you follow the instructions to the tee,but you wont brick your box it can be recovered so no stressing,also we may not always be around to answer as quick as you would like but we will get you up and running eventually