Press the or Menu button on your Huawei remote control.
From a forensics standpoint:
Once the reset finishes, your Huawei Q11 will reboot into the initial setup wizard, mimicking its out-of-the-box condition. Follow these final steps to get back online: Huawei Stb Q11 Factory Reset
This command will reboot the device and restore the configuration to its factory default settings. Press the or Menu button on your Huawei remote control
If your remote uses Bluetooth, hold down the designated pairing buttons (usually the Home and Back keys simultaneously) near the box. Huawei Stb Q11 Factory Reset