Provided by: usb-modeswitch_1.2.3+repack0-1ubuntu2_i386 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

       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


       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 message)

       -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 attributes

       -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

       -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

       -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 supported

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

       -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 testing


       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