Launch ZTE Qualcomm Writer software
Click "Refresh" button to detect modem
To access support area website click "Enter Support Area" button
In opened page's search field type: "64K_BD_IDEAMF190V1.0.0B0_Decustomize.dgtk" and hit "Enter" button on keyboard
Select the offered file and click "Download" button
On ZTE Writer software press white paper icon
on right side of the line under "Firmware Digiteka File", then navigate
to downloaded file, select it and click "Open"
Now press "Update" button on ZTE Writer software
Wait for update to be finished
After update completes, device redetects itself on the program
Modem is now unlocked and usable with any sim card.
