Using a paperclip, press the reset button on the back of the router for 15 seconds. Wait for the lights to cycle.
If you cannot find the old firmware, there is a lesser-known ADB-style backdoor for the B311-221 that still works on most units. unlock huawei b311221 updated
Need a longer blog post, step-by-step unlock commands, or a draft tweet-thread? Tell me which format and tone (technical, casual, or sales) and I’ll write it. Using a paperclip, press the reset button on
: Power off the router and insert a SIM card from a different network provider. Enter the Unlock Code Using a paperclip