The Huawei B311-221 is a popular LTE Cat6 router, often nicknamed the "4G Smart Hub." It’s the go-to device for home broadband in rural areas, campervans, and failover setups. But like many ISP-locked routers, its potential is often crippled by restrictive firmware.
The golden age of Huawei router modding (2018–2021) has passed, but the B311-221 remains one of the last easily unlockable Balong devices. If you find one on eBay with old firmware, grab it. huawei b311-221 firmware
iptables -t mangle -I POSTROUTING -o wwan0 -j TTL --ttl-set 65 iptables -t mangle -I PREROUTING -i wwan0 -j TTL --ttl-set 65 Save it with iptables-save > /etc/iptables.rules . Edit /etc/dnsmasq.conf : The Huawei B311-221 is a popular LTE Cat6