Most NR5103E units are set to "Auto Online Upgrade" by default. Zyxel NR5103E Firmware update
If you are experiencing connection drops, update to the latest available firmware (starting with V1.00 ). If the official Zyxel page shows an older version, check with your Internet Service Provider for the carrier-specific version, as generic firmware may not install on locked devices. zyxel nr5103e firmware update 39link39
Zyxel does not always host the latest NR5103E firmware publicly on their generic support page because this is often an device (used by providers like Elisa, DNA, or others). Most NR5103E units are set to "Auto Online
For the best 5G performance, security, and stability on your Zyxel NR5103E, update today – but do it the safe, verified way. and stability on your Zyxel NR5103E