Keep in mind that these are general guesses, and the actual default password may vary depending on the manufacturer and model.
Some boards have two small holes or a physical button labeled "Reset" or "J1/J2". Shorting these pins with a screwdriver while powering on the unit may trigger a factory reset. 4. QR Code Recovery How to Reset DVR Password 11 Jan 2021 — dvr model ahb8204 hnn super password top
If software methods fail, a physical reset restores the unit to factory defaults (Username: , Password: How to Reset DVR Password Keep in mind that these are general guesses,