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Huawei internals

Blog about Huawei LTE portable routers/USB dongles/MiFi hardware and software internals

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E5770 FW version 21.327.01.00.1133, 21.200.19.01.405, 21.318.01.02.07 downgrade to technological 21.180.99.10.00

on May 11, 2019 · less than 1 min read

This special firmware allows installing technological firmware on firmware versions mentioned in the title, without entering OEM code (AT^DATALOCK), and without using test-point (needle method).

Technological firmware allows installing any other firmware (even with incorrect or corrupted signature), without any restrictions.

WARNING:If you flash this firmware, you won't be able to revert your old firmware version because there's no official firmware files of these version available in public access. You can install any other firmware though.

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E5770 O2 FW version 21.200.19.01.405 SIM unlock

on Mar 16, 2019 · less than 1 min read

Huawei E5770 from British O2 network could be unlocked for free with a special firmware, without disassembling the device.

This firmware is based on 21.200.19.01.405 version and could be installed without flash code.

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E5770 custom firmware v2.3

on Jan 19, 2019 · 1 min read

Custom 21.329.01.00.00 firmware and 17.100.19.01.00 web interface for E5770

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Download

The firmware is based on the original global firmware version 21.329.01.00.00. It can be installed on any technological firmware, or updated from a modified firmware.

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E5372 custom firmware v1.5

on Jan 19, 2019 · 1 min read

Custom 21.290.23.00.00 firmware and 17.100.19.01.00 web interface for E5372

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Download

The firmware is based on the original global firmware version 21.290.23.00.00. It can be installed on any previous firmware (unless you have locked bootloader), or updated from a modified firmware.

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Pros and cons of Huawei devices

on Dec 02, 2018 · 1 min read ·
9 comments

Huawei produces high quality hardware with their own sensitive radio and Wi-Fi modules, but they don't care about end users, you will get absolutely no support from Huawei. For example, E5885 router has broken USB networking in Linux; contacting support 5 times during the year did not help the problem, you'll be asked for your device IMEI and serial number once and won't receive further replies for update requests. In case of any problems, you're on your own.

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Huawei Balong series

on Dec 01, 2018

Huawei Balong is a series of custom System-on-Chip used in all Huawei LTE routers and USB sticks, except for some selected models with Qualcomm Snapdragon targeted for USA market. This is a custom silicon with 3 ARMv7 cores for Linux, VxWorks and M3 Monitor, and ConnX BBE16 DSP for baseband. Several models include additional HiFi audio DSP core for audio communications.

Current generation is Balong Hi6932 V7R22 (all models are LTE cat. 6).
These models have 256 MB RAM (128 MB available for Linux, 80 MB free) and 256 MB NAND. Routers use Hi1151 Huawei or Broadcom BCM4356 Wi-Fi chipset.
V7R22 devices run Linux 3.10.59 kernel with Android modifications. ARMv7 cores has vfpv4 and NEON floating point operation support.

Model Type Display LTE cat. Wi-Fi Battery Ext. Antenna LAN port (RJ45)
E5785 Router 128×64 OLED Cat. 6 802.11ac 2.4/5 GHz 3000 mAh, removable + +
E5885 Router 128×64 OLED Cat. 6 802.11ac 2.4/5 GHz 6400 mAh, non-removable + +

Previous generation is Balong Hi6921 V7R11 (all models are LTE cat. 4).
V7R11 models have 128 MB RAM (41 MB is available for Linux, 14 MB free) and 128 MB NAND flash. Routers use either Realtek RTL8192ES (2.4 GHz) or Broadcom BCM43241 (2.4/5 GHz) Wi-Fi chipset.
V7R11 devices run Linux 3.4.5 kernel with Android modifications. ARMv7 cores support vfpv3d16 floating point operations.

Model Type Display LTE cat. Wi-Fi Battery Ext. Antenna LAN port (RJ45)
E3372h USB stick - 4 - - + -
E5573* Router - 4 2.4 GHz or 2.4/5 GHz 1500 mAh ± (missing on some modifications) -
E5575 Router with wall plug - 4 2.4 GHz 1500 mAh - -
E5577 Router 128×128 OLED 4 2.4/5 GHz 1500/3000 mAh + -
E5578 Router 128×64 OLED 4 2.4 GHz 1900 mAh - -
E5771 Router - 4 2.4 GHz 9600 mAh - -
E8372 USB Stick - 4 2.4 GHz - + -
E8378 Router with wall plug - 4 2.4 GHz - - -

* There are different modifications of this router: E5573s, E5573Cs, E5573Bs, which differs in hardware.

Balong Hi6930 V7R2, the older generation, brings devices with 128 MB NAND and 128/256 MB RAM, which run Linux 3.4.5 with Android modifications, contain Broadcom 43241 or 4354 Wi-Fi chips. ARMv7 cores support vfpv3d16 floating point operations. These devices are not getting firmware updates anymore, and most probably are vulnerable to KRACK and BroadPWN vulnerabilities.

Model Type Display LTE cat. Wi-Fi Battery Ext. Antenna LAN port (RJ45)
E3372s USB stick - 4 - - + -
E5373 Router Indicators 4 2.4/5 GHz 1500 mAh + -
E5377 Router 128×128 OLED 4 2.4/5 GHz 1500 mAh + -
E5383 Router LED 6 2.4/5 GHz 3000 mAh - -
E5786 Router 128×128 OLED 6 802.11ac 2.4/5 GHz 3000 mAh + -
E5787 Router LED 6 802.11ac 2.4/5 GHz 3000 mAh - +
E5878 Router 128×64 OLED 4 2.4 GHz 1900 mAh - -

Balong Hi6920 V7R1 (all LTE cat. 4) comes with 256 MB NAND and 128 MB RAM (15 MB free in Linux), Broadcom BCM43241 Wi-Fi chipset.
V7R1 devices run Linux 2.6.35.7 kernel with Android modifications, and are not getting firmware updates anymore, and most probably are vulnerable to KRACK and BroadPWN vulnerabilities. ARMv7 cores come without floating point support.

Model Type Display LTE cat. Wi-Fi Battery Ext. Antenna LAN port (RJ45)
E3272 USB Stick - 4 - - + -
E3276 USB Stick - 4 - - + -
E5372 Router 128×128 OLED 4 2.4/5 GHz 1780/3560 mAh + -

3G Sticks run Balong V3R3:

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Huawei firmware links

on May 04, 2018 · 1 min read

Firmware files

Huawei firmware files are not easy to find. Huawei don't publish firmware files on their website, but there are some third-party filrmware archive websites where you can find selected firmware versions.

These archives are usually premium and require paid subscription, but some of the files are available for free.

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