For certain regions and versions, you may be able to update without a manual file: How do I update the firmware version of my HUAWEI router
To ensure the stability and security of your device, always prioritize official sources: Huawei Hg8145v5 Firmware Download
You may find "unlocked" or "XPON/EPON" conversion firmware on forums or YouTube. For certain regions and versions, you may be
Verify if your model is "Version 1" (Old) or a newer release, as firmware is not always interchangeable between hardware versions. Configuration Loss: For certain regions and versions