If newer firmware blocks third-party modifications:
Huawei uses a format:
B525s-23a V100R001C...Bxxx
Examples:
The firmware supports TR-069 (CWMP), which allows ISPs to remotely provision the device. This service is active by default. Security researchers have noted that if the ISP's ACS (Auto Configuration Server) is compromised, devices could theoretically be manipulated. Advanced users often disable this service via hidden menus to prevent carrier interference.
Modify iptables via Telnet:
iptables -t mangle -I POSTROUTING -j TTL --ttl-set 65
iptables -t mangle -I PREROUTING -j TTL --ttl-set 65
Make persistent by adding to /etc/rc.local after remounting rootfs as rw.
This works for stock firmware only.
Overall Rating: 4.0/5
Best for: Users needing a reliable 4G/LTE Cat6 router with basic advanced features, not looking for 5G.