Can be found via the Huawei Enterprise Support Portal or Huawei Consumer Support .
: IPv4/IPv6 dual stack, built-in DHCP, and NAT configuration. Where to Download Firmware huawei b311221 firmware download patched
ICMP information leakage, allowing unauthorized netmask/timestamp retrieval. CVE-2017-6951 Can be found via the Huawei Enterprise Support
Never mix firmware for B311-221 or B315/B525 – they are incompatible. huawei b311221 firmware download patched
For most users, using the official update path is the safest way to ensure device stability and security. Online Update
