The camera’s bootloader had automatically looked for a TFTP server on the local network and found Mark's laptop. It force-flashed the firmware, wiping all user data, passwords, and locks. After 5 minutes, the camera rebooted. Mark typed 192.168.1.108 into his browser, used admin / admin , and was inside.
Here is a comprehensive guide to resetting your Dahua camera without using an external reset button. how to reset dahua ip camera without reset button
Follow the steps above, and you will likely be watching your live feed within 15 minutes. The camera’s bootloader had automatically looked for a
run saveenv reset
If you can still log in but want to clear all settings, use the camera's built-in web portal. Enter the camera's IP address into a web browser. Navigate: Go to Setting > System > Default . Choose Reset Type: Default: Resets all settings except the IP address. Mark typed 192
If you have a Dahua NVR (Network Video Recorder) or DVR (Digital Video Recorder) connected to your camera, you can reset the camera through the NVR or DVR. Here's how: