Verified by Huawei for the specific hardware revision. How to Update or Restore Original Firmware
The Huawei E5172 is a popular mobile broadband router that supports 4G LTE connectivity. Like any other electronic device, it requires firmware to operate. Firmware is the software that controls the device's hardware components and provides the interface for user interaction. In this paper, we'll discuss the original firmware of the Huawei E5172, its importance, and how to obtain it. huawei e5172 firmware original
Usually yes, but only if the carrier firmware is not "anti-rollback" protected. Try downgrading via TFTP. If it fails with "version list check error," you cannot downgrade. Verified by Huawei for the specific hardware revision