I lost the admin password of my 4 CH DVR.
The DVR is not well identified, it reports the China brand HENGSTAR, I have not found a support web site on internet.
The main board has the following code: HI3520D_V1_65.
I have already tried all common things as common passwords (000000, 123456, etc.), removing the battery, etc.
Any suggestions to help me?
I attach a set of photo of the DVR (front, back and main-board).