The 2021 solution was to flash a . This was a custom-compiled firmware (often derived from the Russian/Chinese open-source communities) that contained drivers for both PON types, or to modify the existing GPON firmware's configuration file ( hw_boardinfo ) to spoof the device as an EPON model (e.g., changing the identifier to look like an HG8245E).

The represents a high-water mark in consumer networking hacking. After 2021, Huawei began locking bootloaders cryptographically on newer ONTs (the HG8245W6 series), making such conversions impossible. Therefore, the HG8245H5 remains the last truly "universal" fiber gateway.

officially states that such conversions are impossible due to hardware differences, many technical forums and video guides demonstrate that the HG8245H5's chipset often supports both protocols at a low level, which the custom firmware "unlocks". Key Considerations and Risks Stability Issues : Users on

Why is the "2021" tag relevant?

If you have an HG8245H5 gathering dust because you switched ISPs, this firmware is your golden ticket. It transforms a useless GPON-locked gateway into a high-performance EPON router. However, respect the hardware—use quality fiber jumpers, monitor your optical power, and always keep a backup of the original flash.

The upgrade is typically performed through the router’s web interface: Access the ONT : Log in via 192.168.100.1 using administrative credentials (default: telecomadmin admintelecom Navigate to Upgrade System Tools Firmware Upgrade Upload File : Browse for the downloaded firmware file specific to EPON conversion.

The 2021 exclusive firmware rush was a technical marvel, but practically? It was a headache.