A: HNN is an OEM brand; they usually refer you to the seller. Without proof of purchase, they will not provide backdoors for security reasons.
If the default login fails, you can recover access using these techniques: dvr model ahb8204 hnn super password top
: If your DVR provides a QR code on the login screen after clicking "Forgot Password," you can often scan this using the manufacturer's mobile app (such as XMEye or Hik-Connect ) to receive a reset code via a registered email. A: HNN is an OEM brand; they usually refer you to the seller