If you still want to proceed, always keep your original firmware backup and prepare a USB-TTL serial console ($5 on Amazon) – that’s your last rescue tool if the device is bricked.

Test Wi‑Fi stability: connect multiple clients, idle 1 hour, then resume throughput test.

1 GE (Gigabit) and 3 FE (Fast Ethernet) LAN ports, plus one phone (POTS) port. Reliability: dual firmware images

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