After the upgrade completes, the router should start normally.
One workaround involves using the router in "bridge mode" and connecting your own personal router. This allows you to use a router with fully customizable firmware, such as DD-WRT or OpenWrt, for advanced features, while the AOT-4221SR simply acts as a modem. aot-4221sr firmware upgrade
Firmware upgrades are inherently risky. If power is lost or the wrong firmware is applied, the device can become permanently unusable (bricked). Airtel AOT-4221SR devices are often locked to the ISP. Forcing a firmware update or modifying parameters may breach your service agreement and disable your fiber connectivity. Proceed with caution. 1. Why Update the AOT-4221SR Firmware? After the upgrade completes, the router should start