If your DVR is connected to a network, you can often update it remotely:
This is more important than the version number itself. dvr5608ln firmware update
Place the firmware file directly in the root directory of the USB drive (not inside a folder). Insert and Menu: If your DVR is connected to a network,
Would you like help identifying your specific DVR5608LN variant using a photo of the system info screen or motherboard? dvr5608ln firmware update
Go to Main Menu > Maintenance (spanner icon) > Upgrade .
Interrupting the update can damage the device. Method 1: Local USB Update (Recommended)