highly discouraged and generally not possible

It is to convert a Huawei HG8245H

XPON Firmware:

Newer "XPON" (Dual Mode) firmware allows the optical transceiver to sense the network type and switch automatically.

• Web interface: System Tools → Firmware Upgrade → Choose EPON firmware → Upgrade
• OR via TFTP:

Note: On the HG8245H, this command often returns "Permission denied" or "Hardware mismatch".

Troubleshooting & Notes

Introduction

If you need a device that works on both network types, it is highly recommended to purchase a native XPON (Dual Mode)

• Hardware version from your HG8245H sticker/UI
• Current firmware version
• Target OLT brand and EPON mode (e.g., 1000BASE-PX20, EPON PX20+)