Hi TechnicalTony Thanks for reply but my dear when DVR firmware be corrupt then dvr do not power on, then should have to upload correct firmware it is my experience now i want to give you example,
i am technician if any client bring dvr for this situation i change the software IC to the main mother board because i have Master program of 16CH Dahua DAH5116H.
But it is not good process with Hardware i want software process,
If you have any update kindly inform me.