TP-Link Deco X50-4G - Modify LAN IP and DHCP Settings; Enable IPTV;VLAN and MAC Clone

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3. Tap Change PIN whenever you want to set a new PIN code. You need
to enter the current PIN before you set a new one.
4. Enable Auto-Unlock PIN, then the PIN code will be validated
automatically every time you reboot the router or reinsert the
SIM card.