: Once the update is finished, the device will usually restart. You should then remove the SD card and delete the firmware file from it to prevent the device from trying to update every time you turn it on. Where to Find the File
Go to Menu > Maintenance > Upgrade .
: To find the exact firmware, check the physical label on the bottom of the device for a secondary model number (e.g., DS-7208HGHI-M1 ). Common Firmware Update Procedures