: Look for the actual firmware file, which typically has a .bin extension.
: Once downloaded, extract the .rar file using a tool like WinRAR or 7-Zip. Download Firmware Dahua 3116H Backup rar
Because using the wrong firmware can permanently damage (brick) your device, you must match the exact model number found on the device's sticker or system information area. : Look for the actual firmware file, which typically has a