Huawei E3531 detect and unlock guide

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 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.