Huawei E303 is a well known and widely used mobile broadband device (USB Modem / Data card), it available in two types Hi-link and Normal. In This article you can find Huawei E303 Specification, Firmware Update, Drivers, Unlock Solution. $./unlocker.py -help. Huawei modem unlocker By Neil McPhail and dogbert This is Free Software as defined by the GNU GENERAL PUBLIC LICENSE version 2. This software comes with NO WARRANTY This software can damage your hardware Use it at your own risk. Not all modems can be unlocked with this software.

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Introduction

This article describes how to configure Huawei E1550 3G modems.

This modem is generic modem device, but there are two kludges:

• you need to switch it into modem mode
• you need to load proper driver (usbserial)

Prepare device

Switch into modem mode

By default kernel recognizes it as usb-storage device (SCSI CD-ROM). It is true, because of this modemcontains MicroSD card (up to 4Gb) reader and internal flash.

To turn on modem you should run

command.

See also the usb_modeswitch package, which you may need in future since in udev-157 modem-modeswitch has been renamed and changed as described in the commit. This package does not need any modifications, just install it.

Also you can create udev's config: /etc/udev/rules.d/15-huawei-e1550.rules

After that, modem changes its USB IDs to 12d1:140c and /proc/bus/usb/devices shows new USB endpoints.

Driver loading

usbserial is proper driver for this modem, but probably it does not recognize it, so you shouldforce it, passing USB IDs.

or put options into /etc/modprobe.d/modprobe.conf

(do not forget to rmmod usbserial if it is already loaded before)

Optional: device naming

You can generate symlinks to the ttyUSB* ports for a more human readable configuration with udev rules.

For a Huawei device which identifies with the USB ID 12D1:1001 after modeswitching and has 3 serial ports:

For a Huawei device which identifies with the USB ID 12D1:1003 after modeswitching and has 2 serial ports:

Connecting internet

Now you have new 2 or 3 /dev/ttyUSB* devices.Most likely first of them (ttyUSB0 if you had not such devices before) is PPP compatible modem. Use it as usual with pppd, kppp, gnome-ppp, network-manager, etc.

Using gammu

Use gammu to access cell phones functionalities.

Edit ~/.gammurc

you can also generate the config using

Sending SMS:

find device info:

for gui use wammu^AUR or modem-manager-gui.

USSD Requests

Use ussd.php tool.

Unlock Modem Huawei Linux Password

Success Stories

Unlock Modem Huawei Linux Download

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Unlock Modem Huawei Linux Mint

2010-August-03: I did not do anything, I just installed usb_modeswitch-1.1.3-2 and my kernel is 2.6.33. In the syslog (/var/log/messages.log) the usb_modeswitch can automatically configure the modem correctly but I still cannot connect to the internet using gnome network manager applet, then I installed the modemmanager package and restart the networkmanager.service. Everything is working properly now.

Unlock Modem Huawei Linux Windows 10

References