Note: before proceeding with steps below, insert operators sim card that does not work with device. For example if it's locked to operator "A" insert operator's "B" sim

Launch DC-Unlocker client

Detect device by selecting Huawei modems from manufacturers drop down menu list, leave Select model as auto detect (recommended) then click magnifying glass button

Wait till DC-Unlocker fully detects modem

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” or "Do job". If there are more option in Unlocking tab - do not change anything

Wait till you see a message that device was unlocked

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