Huawei B311221 Firmware Verified -

Possibly, but it is highly discouraged. Huawei generally does not provide "Downgrade" packages. Attempting to force an older firmware on a newer bootloader can hard-brick the device. If an update causes issues, a "Factory Reset" is the safer first step.

If you simply want to ensure your device is running the latest software without unlocking it, you should use the official Huawei update methods 1.2.3 : Connect your phone to the router's Wi-Fi network. Open the AI Life App . Select your router. Go to Updates > Check for Updates . Via Web Interface: huawei b311221 firmware verified