: Look for the Maintenance or Administration tab.
Open a standard web browser (Chrome, Firefox, or Edge) and navigate to your gateway IP. Typically admin . aot4221sr firmware upgrade
If an update failed or the system operating environment becomes deeply corrupted, advanced technical users can flash firmware onto Sercomm chipsets utilizing dedicated software environments. How to upgrade the firmware of TP-Link 5G/4G Routers : Look for the Maintenance or Administration tab
Confirm your device label reads exactly "AOT4221SR". Installing firmware intended for a similar but different model will break your device. aot4221sr firmware upgrade
Connect your device (laptop/PC) to the router via LAN cable or Wi-Fi.