: Access the DVR via its IP address in a web browser. Go to Settings > System > Upgrade and upload the file from your computer.
Yes, but it is not recommended. Downgrading can cause configuration file conflicts. You can flash an older official .bin the same way, but you may lose newer features.
: Some regional distributors maintain public repositories, such as the Dahua Support Files for XVR-X models. Update Methods You can update your XVR using three primary methods: Online Update (Easiest) : Navigate to Main Menu > Maintain > Update
: The official Dahua Download Center is the primary source for free, official firmware files.
: Follow the manufacturer's instructions for updating the firmware carefully. Firmware updates usually come with step-by-step guides.