Launch DC-Unlocker client
Open Server tab, enter your username and password that you received after credits purchase. Click "Check login". (you can buy credits here www.dc-unlocker.com/buy). If DC-Unlocker/Vygis/Rocker/Infinity dongle is connected, only click " Check login "
Detect device by selecting Huawei modems from manufacturers drop down menu list, then click magnifying glass button. If device does not have visible COM ports in device manager then DC-unlocker will enable them automatically during detection
Wait till program detects it
Open Unlocking tab, click “Do job” button
Wait for device to be unlocked
After you see that modem was successfully unlocked, restart it by disconnecting and connecting back. Now you can use it with any SIM card.