Huawei is offering E5172 sub-model E5172Cs-930 in Ghana (West Africa), which comes locked to BLU carrier. It has firmware version V200R001C1236SP202 and Web UI version 22.001.01.00.03. It comes locked to Blu network and can not be used with any another network than the default. However, it comes with un-customized firmware and can be unlocked using correct unlock / NCK / SIMLock Code.
How to Unlock Huawei E5172Cs-930 4G LTE WiFi Router / Gateway?
1. Change the default SIM with another network provider SIM.
2. Plug the device to PC using LAN cable.
3. Browse default IP address of Blu E5172Cs-930 through internet explorer.
4. Login to the router using admin/password.
5. Go to setting and search for SIMLock.
6. Here, enter the correct NCK / unlock code.
7. Click OK.
Now, your device is unlocked forever.