Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
1.7.2 USB Port
In normal cases, the USB port works in slave mode. In slave mode, the USB port will be
mapped to a computer UI after the Huawei-provided chip driver is installed on the computer.
This UI is locked by default. You can run other AT commands and write data to the SoftSim
card only after running the unlock command. After the serial port mapped by the USB is
connected successfully, run the unlock command.
The commands for unlocking the computer UI port and changing the unlock password are as
follows:
at^PCPORT=”pwd”,1: Enable the computer UI.
pwd indicates the unlock password.
at^PCPORT=”pwd”,0: Disable the computer UI.
pwd indicates the unlock password.
at^PORTPWD=”oldPwd”,”newPwd”, “newPwdConf”: Change the unlock password
of the computer UI.
Here, oldPwd indicates the current password, and newPwd the new password, and
newPwdConf the confirm password. newPwd must be the same as newPwdConf;
otherwise, the password cannot be changed.
The default unlock password is $Zls123Q.
To improve security, change the default USB unlock password at your first login and regularly
change the password. It is recommended that users do not set an empty password or a simple
password.
A password must meet the following rules:
A password consists of at least eight characters.
A password contains at least three types of characters of the following:
− Lowercase letter
− Uppercase letter
− Digit
− Special characters, including the space character and the following: ! # $ ( )
* - . / = @ [ ] ^ _ ` { } ~ |
The password cannot be the user name or the reverse order of the user name.
A password cannot contain more than two consecutive characters that are the same
(for example, 111 is not allowed.)
When the PC UI is unlocked, you can run commands to unlock other USB ports or AT
commands to map the ports in the following table.
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