If you flash the wrong firmware, you will brick the DVR permanently. Use this method only for unbranded generic AHD units that you are willing to destroy.
Use a flathead screwdriver or metal tweezers to bridge (touch) those two points together. ahd dvr password reset
Battery removal will erase date/time settings and network configurations, but video footage on the hard drive remains intact. If you flash the wrong firmware, you will
Unless you are a networking professional, avoid this method. Contact the manufacturer for the "firmware recovery kit." Battery removal will erase date/time settings and network
How to Reset DVR to Factory Default without Password? - Reolink
. This requires opening the chassis (which may void the warranty). By holding the reset button for 10–15 seconds while powering on the device, the system typically clears all settings, including the admin password, and reverts to the factory state. 3. The Super Password / Dynamic Password