All Reolink devices except battery-powered cameras and WiFi NVR.
Note: Please make sure you already download the firmware from Reolink Website and unzip the .pak file before upgrading.
Step 1. Unzip the firmware file(.pak file) onto your PC and transfer it to USB, then insert USB to NVR USB port.
Step 2. Log in your NVR, then go to "Device Settings"->"System"->"Maintenance" page.
- click the "Upgrade IPC From USB" and select the correct firmware for each camera to upgrade.