If device powers on but no Wi-Fi or web UI:

Look at the sticker underneath the battery or on the back of the device (e.g., Huawei E5577, Netgear Nighthawk M1, TP-Link M7350).

Disclaimer: Always ensure you are downloading firmware specifically designed for your device's hardware revision. Using incorrect firmware can permanently damage the router.

Choose "Local Update," select the file you downloaded, and click "Apply."

Protects your data from newly discovered vulnerabilities 1.

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