: Because ONTs are part of a service provider's infrastructure, many ISPs push updates automatically. If you are experiencing issues, contacting your ISP's support is the recommended way to receive the correct, carrier-verified firmware.
Always verify the MD5 hash or checksum of a file downloaded from a third party to ensure it hasn't been tampered with. Why You Need the Right Version
: You can also search for the model directly on the broader Huawei Software & Firmware Download page. How to Access the Firmware
Walk through the if you already have the file.