Note: before proceeding with steps below, set adapter bindings by following instructions here. Also insert operators sim card that does not work with device. For example if it's locked to operator "A" insert operator's "B" sim. Connect device to PC with USB cable

Launch DC-Unlocker client

Detect device by selecting Huawei modems from manufacturers drop down menu list, then click magnifying glass button

Wait till program detects it

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 "

Open Unlocking tab, click "Unlock" button

Note: if you get Error Connecting to Server or Error Code 62, check Adapter Bindings Settings here

Wait for device to be unlocked

After you see that modem was successfully unlocked, restart it. Now you can use it with any SIM card