: Technical release notes and official software packages for various versions (like 10.0.1.1) are available on the Huawei Enterprise Support Portal Patched & Modified Firmware (Community Resources)
The process of patching firmware involves: huawei b311221 firmware download patched
The B311221 has hardware revisions. Check your sticker under the router: : Technical release notes and official software packages
Patched firmware refers to a modified version of Huawei’s official software. Unlike stock firmware, which is signed and validated by Huawei, a patched version has been altered to: huawei b311221 firmware download patched