If you still get “SIM network locked,” you need a network unlock code (see Part 5 below).
(often Balong-based) to overwrite the ISP-restricted software. Projects such as Huawei-LTE-routers-mods huawei router b311221 unlock firmware free
, you can try using online tools to generate an unlock code: If you still get “SIM network locked,” you
The most common and safest way to unlock this device is through an rather than potentially risky third-party firmware. Understanding the Unlocking Process Unlocking allows the Go to product viewer dialog for this item. huawei router b311221 unlock firmware free
85% (fails on newer firmware versions).