Description
When transitioning your Network Video Recorder (NVR) from version 3.4.x to the 4.x firmware, ensure that the NVR firmware is updated to v3.4.92 170518. It is critical to perform a system factory reset before proceeding with the upgrade to version 4.x. Neglecting to have the NVR at v3.4.92 and failing to execute a system factory reset before the firmware upgrade could make the NVR non-functional.