Provided by: usb-modeswitch_1.2.3+repack0-1ubuntu2_amd64 bug


       usb_modeswitch - switch mode of "multi-state" USB devices


       usb_modeswitch [-heWQDIvpVPmM23rwdHSOBGTNALnsRiuagft] [-c filename]


       Several  new  USB devices have their proprietary Windows drivers onboard, most of them WAN
       dongles. When plugged in for the first time, they act  like  a  flash  storage  and  start
       installing  the  Windows  driver from there.  If the driver is already installed, it makes
       the storage device disappear and a new device, mainly composite with  modem  ports,  shows

       On  Linux,  in most cases the drivers are available as kernel modules, such as "usbserial"
       or "option". However, the device shows up as "usb-storage" by default. usb_modeswitch  can
       send  a  provided bulk message (most likely a mass storage command) to the device which is
       known to initiate the mode switching.

       In some cases, USB control commands are used for switching. These  cases  are  handled  by
       custom functions, and no bulk message needs to be provided.

       Usually,  the  program is distributed with a set of configurations for many known devices,
       which in combination with a wrapper script launched from the udev daemon  allows  a  fully
       automatic handling of a device upon insertion.


       This  program  follows  the usual GNU command line syntax, with long options starting with
       two dashes ('--').  A summary of options is included below.

       -h --help Show summary of options.

       -e --version
                 Print version information and exit

       -v --default-vendor NUM
                 Vendor ID to look  for  (mandatory),  usually  given  as  hex  number  (example:
                 0x12d1).   Each  USB  device is identified by a number officialy assigned to the
                 vendor by the USB association and a number for the respective model (product ID)
                 chosen by the vendor

       -p --default-product NUM
                 Product ID to look for (mandatory)

       -V --target-vendor NUM
                 Target  vendor  ID.  When  given will be searched for and detected initially for
                 information purposes. If success  checking  (option  -s)  is  active,  providing
                 target IDs (vendor/product) or target class is recommended

       -P --target-product NUM
                 Target product ID

       -b --busnum NUM

       -g --devnum NUM
                 If  bus  and  device number are provided, the handling of a specific device on a
                 specific USB port is guaranteed, in contrast to using only the USB ID.  This  is
                 important if there are multiple similar devices on a system

       -C --target-class NUM
                 Target  Device Class according to the USB specification. Some devices keep their
                 original vendor/product ID after successful  switching.  To  prevent  them  from
                 being treated again, the device class can be checked.  For unswitched devices it
                 is always 8 (storage class), for  switched  modems  it  is  often  0xff  (vendor
                 specific). In composite modes, the class of the first interface is watched

       -m --message-endpoint NUM
                 A  specific  endpoint  to  use  for  data  transfers. Only for testing purposes;
                 usually endpoints are determined from the device attributes

       -M --message-content STRING
                 A bulk message to send as a switching command. Provided as a hexadecimal string

       -2, -3  --message-content2, --message-content3 STRING
                 Additional bulk messages to send as switching commands. Provided as  hexadecimal
                 strings.   When  used  with  mass  storage  commands, setting --need-response is
                 strongly advised to comply with specifications and to avoid likely errors

       -w --release-delay NUM
                 After issuing all bulk messages, wait for NUM milliseconds before releasing  the
                 interface.  Required for some modems on older systems (especially after an EJECT

       -n --need-response
                 Read the response (command status wrapper) to a mass storage  command  transfer.
                 Some  devices  have  trouble  switching  if  the  response is not read; most are
                 disappearing right away. When sending multiple mass storage commands with -2 and
                 -3, this may need to be set to avoid transfer errors

       -r --response-endpoint NUM
                 Try to read the response to a storage command from there if option -n is active.
                 Only for testing purposes; usually endpoints  are  determined  from  the  device

       -d --detach-only
                 Just  detach  the  current  driver. This is sufficient for some early devices to
                 switch successfully. Otherwise this feature can  be  used  as  a  'scalpel'  for
                 special cases, like separating the driver from individual interfaces

       -H --huawei-mode
                 Send a special control message used by older Huawei devices

       -S --sierra-mode
                 Send a special control message used by Sierra devices

       -G --gct-mode
                 Send a special control message used by GCT chipsets

       -T --kobil-mode
                 Send a special control message used by Kobil devices

       -T --sequans-mode
                 Send a special control message used by Sequans chipset

       -T --mobileaction-mode
                 Send a special control message used by the MobileAction device

       -B --qisda-mode
                 Send a special control message used by Qisda devices

       -O --sony-mode
                 Apply a special sequence used by Sony Ericsson devices. Implies option --success

       -L --cisco-mode
                 Send a sequence of bulk messages used by Cisco devices

       -R --reset-usb
                 Send  a  USB  reset  command  to  the device. Can be combined with any switching
                 method or stand alone. It is  always  done  as  the  last  step  of  all  device
                 interactions.  Few devices need it to complete the switching; apart from that it
                 may be useful during testing

       -c --config FILENAME
                 Use a specific config file. If any ID or switching options are given as  command
                 line  parameters, this option is ignored.  In that case all mandatory parameters
                 have to be provided on the command line

       -f --long-config STRING
                 Provide device details in config file  syntax  as  a  multiline  string  on  the
                 command line

       -t --stdinput
                 Read  the  device  details  in  config  file  syntax  from  standard input, e.g.
                 redirected from a command pipe (multiline text)

       -Q --quiet
                 Don't show progress or error messages

       -W --verbose
                 Print all settings before running and show libusb debug messages

       -D --sysmode
                 Changes the behaviour of the program slightly. A success message  including  the
                 effective  target device ID is put out and a syslog notice is issued. Mainly for
                 integration with a wrapper script

       -s --success NUM
                 After switching, keep checking for the result up to max. NUM seconds. If  target
                 IDs  or  target class were provided, their appearance indicates certain success.
                 Otherwise the disconnection of the original device is rated as likely proof

       -I --no-inquire
                 do  not  obtain  SCSI  attributes  from  device  (default  is  on).  For  proper
                 identification  of  differing devices the attributes of the storage part provide
                 valuable information.  This is  not  needed  for  devices  that  are  known  and

       -i --interface NUM
                 Select initial USB interface (default: 0). Only for testing purposes

       -u --configuration NUM
                 Select USB configuration (applied after any other possible switching actions)

       -a --altsetting NUM
                 Select  alternative  USB interface setting (applied after switching). Mainly for


       This manual page was originally written  by  Didier  Raboud  (  for  the
       Debian  system.  Additions made by Josua Dietze. Permission is granted to copy, distribute
       and/or modify this document under the terms of the GNU General Public License,  Version  2
       or any later version published by the Free Software Foundation.

       The   complete   text  of  the  current  GNU  General  Public  License  can  be  found  in