Assuming you have obtained a legitimate E5172s-xx_UPDATE_xxx.bin file, follow this safe flashing procedure.

Before you search for a file, you must understand . Huawei routers are often locked to specific regions or ISPs (Internet Service Providers).

Old tools like Huawei Firmware Extractor or Huawei Update Extractor can pull firmware from .bin files if found, but – only a parser.

If your router is currently working, take a screenshot of your "Device Information" page now . If you ever brick it, that screenshot is your only map to finding the correct firmware to revive it.