Huawei E3372 Firmware

This is a technical briefing document on the Huawei E3372 firmware , covering its variants, functionality, updating procedures, and common modifications (such as “stick mode”).

Technical Brief: Huawei E3372 Firmware 1. Overview The Huawei E3372 is a popular 4G/LTE USB modem (dongle) used for mobile broadband connectivity. Its behavior—whether it acts as a standard mass storage device containing drivers or as a pure network interface—is determined entirely by its firmware . Firmware for the E3372 controls:

USB composition (e.g., CD-ROM + Ethernet, or HiLink, or MBIM). Supported LTE bands. Web UI (HiLink) functionality. Debug/serial port access.

2. Firmware Variants Two major firmware branches exist for the E3372, based on the primary mode : | Variant | Identifier | USB Composition | Interface | |---------|------------|----------------|------------| | HiLink (old) | E3372h-153 | 12d1:14dc | Web UI at 192.168.8.1; acts as router with NAT | | Stick / Modem (NDIS) | E3372h-607 | 12d1:155e | Direct modem (MBIM or NCM); passthrough mode | 2.1 HiLink Firmware ( E3372h-153 ) huawei e3372 firmware

Default for consumer models. Enables Web UI over Wi-Fi or USB Ethernet. Runs a full Linux system with NAT/router functions. Requires double NAT if used behind another router. Not ideal for OpenWrt/Raspberry Pi low-level control.

2.2 Stick/Modem Firmware ( E3372h-607 )

Designed for embedded systems (Raspberry Pi, OpenWrt, industrial routers). No Web UI; presents as MBIM or NCM network interface. Works with modemmanager (Linux) or native Windows/Mac drivers. Allows direct IP passthrough (no double NAT). This is a technical briefing document on the

Note: The hardware chipset (HiSilicon Balong) is identical; only firmware differs.

3. Firmware Identification Check current firmware version without flashing: Linux: lsusb -v 2>/dev/null | grep -E "idProduct|bcdDevice"

Windows:

Use Huawei Virtual COM port (AT command ATI ).

AT command method (any OS with serial access): ATI AT^HWVER? AT^FIRMWARE?