Under most jurisdictions (including EU regulations and the US Unlocking Consumer Choice Act), unlocking your own device is legal. However:
Always check your local laws.
Your request mentioned the device is "Updated." unlock huawei b311221 updated
This method rolls your B311-221 back to a vulnerable firmware version (usually 11.176.63.01.145), applies the unlock, then updates again safely. Under most jurisdictions (including EU regulations and the