All Reolink PoE NVRs.
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.
- If you just upgrade the firmware for the NVR, you may click the "Upgrade From USB" and select the correct firmware file to upgrade.