Never update firmware during a storm or when power cuts are likely. If the device loses power during an update, it can become permanently unusable. Using an Uninterruptible Power Supply (UPS) is highly recommended.
As network standards and third-party software evolve, firmware updates ensure that older CP Plus hardware remains compatible with newer routers, switches, and mobile applications. Best Practices for Updating CP Plus Firmware
Navigate to Setup > System > Upgrade .