: If updating manually via the DVR, format a USB flash drive to FAT32 and copy the .bin file to the root directory. Update Methods
: Look for the actual firmware file, which typically has a .bin extension. Download Firmware Dahua 3116H Backup rar
: Once downloaded, extract the .rar file using a tool like WinRAR or 7-Zip. : If updating manually via the DVR, format