NOTE: ZTE MF65M and ZTE MF65+ - not supported for unlock!

Launch DC-Unlocker client software.

Select manufacturer: ZTE modems, model leave Auto detect (recommended).

Press "Detect" button (Big magnifying glass):

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, do not enter username and password, only click "Check login".

If you get warning window during detection, run DC-unlocker as administrator 

Right click on DC-Unlocker icon and select "Run as.." or "Run as administrator" from options menu to launch software with administrator rights

Open Unlocking tab, click “Unlock”

Wait till you see a message that modem is unlocked.

After you see that modem successfully unlocked, restart it by disconnecting and connecting back. Now you can use it with any SIM card.

Note: if battery indicator is missing after unlocking device check procedure to repair it here