Launch DC-Unlocker client software.
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, do not enter username and password, only click "Check login".
Select manufacturer: Huawei modems, model leave Auto detect (recommended).
Press "Detect" button (Big magnifying glass).
Wait till DC-Unlocker fully detects modem.
Open Unlocking tab, click