1. Overview

Huawei Optical Network Terminals (ONTs) — such as HG8245, HG8546M, EG8145V5, etc. — run on proprietary VxWorks or Linux-based firmware. Flashing (updating or replacing) firmware is required for:

: It sends the firmware via a multicast stream over the network. Set your PC's IP to the same subnet as the ONT.

Huawei ONT Upgrade Tool: Also known as the ONT Multicast Upgrade Tool, this software is used to push firmware via a local network connection.

3. Pre-Flashing Preparation

3.1 Identify Your ONT Model & Hardware Version

# via telnet/SSH after login WAP> display version OR # from web GUI (192.168.100.1) → System Tools → Version

Carrier Users: Log in to the Huawei Support Site with a specialized account to download software specific to your OLT/ONT version.

HWFW_GUI (Extract/repack firmware)

Open .bin → view partitions (rootfs, kernel, uboot).

Replace web pages or binaries → repack → flash via web/TFTP.

Huawei | Ont Firmware Flash Tool

Huawei ONT Firmware Flash Tool: Complete Technical Write-Up

1. Overview

Huawei Optical Network Terminals (ONTs) — such as HG8245, HG8546M, EG8145V5, etc. — run on proprietary VxWorks or Linux-based firmware. Flashing (updating or replacing) firmware is required for:

: It sends the firmware via a multicast stream over the network. Set your PC's IP to the same subnet as the ONT. huawei ont firmware flash tool

Huawei ONT Upgrade Tool: Also known as the ONT Multicast Upgrade Tool, this software is used to push firmware via a local network connection. Huawei ONT Firmware Flash Tool: Complete Technical Write-Up

3. Pre-Flashing Preparation

3.1 Identify Your ONT Model & Hardware Version

# via telnet/SSH after login
WAP> display version
OR
# from web GUI (192.168.100.1) → System Tools → Version

Carrier Users: Log in to the Huawei Support Site with a specialized account to download software specific to your OLT/ONT version. Carrier Users: Log in to the Huawei Support