Huawei E8372h-155 Firmware Update [2026 Update]

After reboot:

Verify your device sticker explicitly says E8372h-155 . Flashing firmware meant for the E8372h-608 or E8372h-320 will permanently damage the hardware. Method 1: Official Update via WebUI (Over-the-Air)

This is a factual report on the firmware update situation, based on available technical sources and user community data (as of 2025–2026). The device is an LTE USB dongle / mobile hotspot.

| Source | Reliability | Cost | |--------|-------------|------| | (e.g., Vodafone, T-Mobile, O2) | High | Free | | dc-unlocker.com (firmware section) | High | Paid (credits) | | 4pda.to – search “E8372h-155 прошивка” | Medium | Free (registration) | | Huawei HiLink firmware archive (Telegram: @huawei_firmware) | Medium | Free |

Connect a computer to the device's Wi-Fi and enter the default IP address (usually found on the nameplate under the cover) into a web browser. Log in and go to More Functions > Manage Updates Check for Updates Auto-update huawei e8372h-155 firmware update

The tool will automatically detect the COM port of your device.

If an update is available, click and wait for the progress bar to finish. Method 2: Manual Local Firmware Update

: Open a web browser and enter the default gateway IP address, which is typically 192.168.8.1 .

Do not skip these preparation steps. Interrupting a firmware flash can permanently brick your device. After reboot: Verify your device sticker explicitly says

Connect the device directly to a laptop or PC USB port. Do not use unpowered USB hubs.

Plug the modem into a reliable USB power source (laptop or wall charger). Do not use a car socket during the update.

⚠️ The -155 suffix indicates a specific band configuration. Using wrong firmware may brick the device or disable bands.

: Plug the Huawei E8372 into a USB power source and connect your computer to its WiFi network. The device is an LTE USB dongle / mobile hotspot

You will need to source three specific files from reputable tech forums or official repositories:

[Connect to Wi-Fi] ➔ [Access 192.168.8.1] ➔ [Log In] ➔ [Check for Updates] Step-by-Step Instructions

Updates like version 21.333.03.00.00 are designed to patch security vulnerabilities and improve how the device handles third-party accessories.

Follow the on-screen prompts to flash the firmware. Do not unplug the device until the tool says "Success". Troubleshooting Common Update Issues