Never power off the NVR during a firmware update, as this can permanently damage (brick) the device. or the contact information for a local service center CP-UNR-4K2161-V2-16 Ch. H.265+ Network Video Recorder
Double-check that your model is specifically the V2 and not the older V1. cpunr4k2161v2 firmware download link
should always be sourced directly from authorized channels to avoid corrupted or malicious files. Official Download Center : Visit the CP PLUS Firmware Support page to search for the latest version specific to your V2 model. Customer Support Never power off the NVR during a firmware