Do not turn off the power during this process. The router will reboot automatically. Troubleshooting Common Update Issues
Ensure you are using an Ethernet cable rather than Wi-Fi for the upload to prevent data corruption. zyxel nr5103e firmware update 39link39
Log in using the admin password found on the bottom of the router. Navigate to > Firmware Upgrade . Note the version string (e.g., V1.00(ACBJ.0)b12). Understanding the "39link39" Reference Do not turn off the power during this process