If you are trying to remove a carrier lock or fix a router that won't boot, you may need a manual firmware file (usually an .hmf or .bin file).
This cannot be overstated. A firmware reset will erase all your custom configurations. huawei e5172 firmware original
: Check your current software version under System > Device Information to ensure the "original" firmware you found is compatible. If you are trying to remove a carrier
Open the Multicast Tool, select your Network Card, and load the original firmware file. Click in the tool. : Check your current software version under System
If you have an enterprise account, Huawei’s official support portal hosts legacy firmware catalogs.
Select your computer's Ethernet network adapter from the network card drop-down menu.
Many E5172 units are (e.g., Vodafone, T-Mobile, Telstra, Smart, Globe). Firmware is released through the operator’s support page or pushed via OTA. Example :