How to unlocking HUAWEI e5172 (e5172As-22)
Today I unlocked one Bahrain zain E5172 (e5172As-22) router Gateway. Also you can unlock same way Saudi Arabia STC ,zain Kuwait . in this way no need to update your modem firmware.
here I'm using unlocking DC-unlocker (you can buy the credit very easily )
How to unlocking HUAWEI e5172 home WiFi router
full video
USB connection 
