USB_ModeSwitch

Here's the usb_modeswitch.conf

################################
DefaultVendor=0x19d2
DefaultProduct=0x2000
TargetVendor=0x19d2
TargetProduct=0x0001
MessageEndpoint=0x05
MessageContent="55534243083067862400000080000612000000240000000000000000000000"
###############################

The switching could take up to one minute, don't know why.

Here's the screen snapshot...

# usb 1-2: new full speed USB device using ohci_hcd and address 5
usb 1-2: new full speed USB device using ohci_hcd and address 6
usb 1-2: Product: USB ZTE Storage
usb 1-2: Manufacturer: Qualcomm, Incorporated
usb 1-2: configuration #1 chosen from 1 choice
usb-storage: device ignored

# cat /proc/bus/usb/devices

T: Bus=02 Lev=00 Prnt=00 Port=00 Cnt=00 Dev#= 1 Spd=480 MxCh= 2
B: Alloc= 0/800 us ( 0%), #Int= 0, #Iso= 0
D: Ver= 2.00 Cls=09(hub ) Sub=00 Prot=01 MxPS=64 #Cfgs= 1
P: Vendor=0000 ProdID=0000 Rev= 2.06
S: Manufacturer=Linux 2.6.23.17 ehci_hcd
S: Product=EHCI Host Controller
S: SerialNumber=0000:00:0c.2
C:* #Ifs= 1 Cfg#= 1 Atr=e0 MxPwr= 0mA
I:* If#= 0 Alt= 0 #EPs= 1 Cls=09(hub ) Sub=00 Prot=00 Driver=hub
E: Ad=81(I) Atr=03(Int.) MxPS= 4 Ivl=256ms

T: Bus=01 Lev=00 Prnt=00 Port=00 Cnt=00 Dev#= 1 Spd=12 MxCh= 2
B: Alloc= 0/900 us ( 0%), #Int= 0, #Iso= 0
D: Ver= 1.10 Cls=09(hub ) Sub=00 Prot=00 MxPS=64 #Cfgs= 1
P: Vendor=0000 ProdID=0000 Rev= 2.06
S: Manufacturer=Linux 2.6.23.17 ohci_hcd
S: Product=OHCI Host Controller
S: SerialNumber=0000:00:0c.0
C:* #Ifs= 1 Cfg#= 1 Atr=e0 MxPwr= 0mA
I:* If#= 0 Alt= 0 #EPs= 1 Cls=09(hub ) Sub=00 Prot=00 Driver=hub
E: Ad=81(I) Atr=03(Int.) MxPS= 2 Ivl=255ms

T: Bus=01 Lev=01 Prnt=01 Port=01 Cnt=01 Dev#= 6 Spd=12 MxCh= 0
D: Ver= 1.10 Cls=00(>ifc ) Sub=00 Prot=00 MxPS=64 #Cfgs= 1
P: Vendor=19d2 ProdID=2000 Rev= 0.00
S: Manufacturer=Qualcomm, Incorporated
S: Product=USB ZTE Storage
C:* #Ifs= 1 Cfg#= 1 Atr=a0 MxPwr=500mA
I:* If#= 0 Alt= 0 #EPs= 2 Cls=08(stor.) Sub=06 Prot=50 Driver=(none)
E: Ad=84(I) Atr=02(Bulk) MxPS= 64 Ivl=0ms
E: Ad=05(O) Atr=02(Bulk) MxPS= 64 Ivl=0ms
#
# cat /etc/usb_modeswitch.conf
DefaultVendor=0x19d2
DefaultProduct=0x2000
TargetVendor=0x19d2
TargetProduct=0x0001
MessageEndpoint=0x05
MessageContent="55534243083067862400000080000612000000240000000000000000000000"
#
#
# uptime
00:24:30 up 24 min, load average: 0.00, 0.00, 0.00
#
# usb_modeswitch

* usb_modeswitch: tool for controlling "flip flop" mode USB devices
* Version 0.9.7 (C) Josua Dietze 2009
* Works with libusb 0.1.12 and probably other versions

Looking for target devices ...
No devices in target mode or class found
Looking for default devices ...
Found default devices (1)
Prepare switching, accessing device 006 on bus 001 ...
Looking for active driver ...
No driver found. Either detached before or never attached
Setting up communication with interface 0 ...
Trying to send the message to endpoint 0x05 ...
OK, message successfully sent
-> Run lsusb to note any changes. Bye

# usb 1-2: USB disconnect, address 6
usb 1-2: new full speed USB device using ohci_hcd and address 7
usb 1-2: Product: ZTE CDMA Technologies MSM
usb 1-2: Manufacturer: Qualcomm, Incorporated
usb 1-2: configuration #1 chosen from 1 choice

# uptime
00:25:20 up 25 min, load average: 0.00, 0.00, 0.00
#
# cat /proc/bus/usb/devices

T: Bus=02 Lev=00 Prnt=00 Port=00 Cnt=00 Dev#= 1 Spd=480 MxCh= 2
B: Alloc= 0/800 us ( 0%), #Int= 0, #Iso= 0
D: Ver= 2.00 Cls=09(hub ) Sub=00 Prot=01 MxPS=64 #Cfgs= 1
P: Vendor=0000 ProdID=0000 Rev= 2.06
S: Manufacturer=Linux 2.6.23.17 ehci_hcd
S: Product=EHCI Host Controller
S: SerialNumber=0000:00:0c.2
C:* #Ifs= 1 Cfg#= 1 Atr=e0 MxPwr= 0mA
I:* If#= 0 Alt= 0 #EPs= 1 Cls=09(hub ) Sub=00 Prot=00 Driver=hub
E: Ad=81(I) Atr=03(Int.) MxPS= 4 Ivl=256ms

T: Bus=01 Lev=00 Prnt=00 Port=00 Cnt=00 Dev#= 1 Spd=12 MxCh= 2
B: Alloc= 0/900 us ( 0%), #Int= 0, #Iso= 0
D: Ver= 1.10 Cls=09(hub ) Sub=00 Prot=00 MxPS=64 #Cfgs= 1
P: Vendor=0000 ProdID=0000 Rev= 2.06
S: Manufacturer=Linux 2.6.23.17 ohci_hcd
S: Product=OHCI Host Controller
S: SerialNumber=0000:00:0c.0
C:* #Ifs= 1 Cfg#= 1 Atr=e0 MxPwr= 0mA
I:* If#= 0 Alt= 0 #EPs= 1 Cls=09(hub ) Sub=00 Prot=00 Driver=hub
E: Ad=81(I) Atr=03(Int.) MxPS= 2 Ivl=255ms

T: Bus=01 Lev=01 Prnt=01 Port=01 Cnt=01 Dev#= 7 Spd=12 MxCh= 0
D: Ver= 1.10 Cls=00(>ifc ) Sub=00 Prot=00 MxPS=64 #Cfgs= 1
P: Vendor=19d2 ProdID=0001 Rev= 0.00
S: Manufacturer=Qualcomm, Incorporated
S: Product=ZTE CDMA Technologies MSM
C:* #Ifs= 3 Cfg#= 1 Atr=a0 MxPwr=500mA
I:* If#= 0 Alt= 0 #EPs= 3 Cls=ff(vend.) Sub=ff Prot=ff Driver=(none)
E: Ad=81(I) Atr=03(Int.) MxPS= 16 Ivl=128ms
E: Ad=82(I) Atr=02(Bulk) MxPS= 64 Ivl=0ms
E: Ad=02(O) Atr=02(Bulk) MxPS= 64 Ivl=0ms
I:* If#= 1 Alt= 0 #EPs= 2 Cls=ff(vend.) Sub=ff Prot=ff Driver=(none)
E: Ad=84(I) Atr=02(Bulk) MxPS= 64 Ivl=0ms
E: Ad=04(O) Atr=02(Bulk) MxPS= 64 Ivl=0ms
I:* If#= 2 Alt= 0 #EPs= 2 Cls=ff(vend.) Sub=ff Prot=ff Driver=(none)
E: Ad=86(I) Atr=02(Bulk) MxPS= 64 Ivl=0ms
E: Ad=06(O) Atr=02(Bulk) MxPS= 64 Ivl=0ms
#
# insmod option vendor=0x19d2 product=0x0001
option: Unknown symbol usb_serial_port_softint
option: Unknown symbol usb_serial_disconnect
option: Unknown symbol usb_serial_register
option: Unknown symbol usb_serial_probe
option: Unknown symbol usb_serial_deregister
usbcore: registered new interface driver usbserial
drivers/usb/serial/usb-serial.c: USB Serial support registered for generic
usbcore: registered new interface driver usbserial_generic
drivers/usb/serial/usb-serial.c: USB Serial Driver core
drivers/usb/serial/usb-serial.c: USB Serial support registered for GSM modem (1)
option 1-2:1.0: GSM modem (1-port) converter detected
usb 1-2: GSM modem (1-port) converter now attached to ttyUSB0
option 1-2:1.1: GSM modem (1-port) converter detected
usb 1-2: GSM modem (1-port) converter now attached to ttyUSB1
option 1-2:1.2: GSM modem (1-port) converter detected
usb 1-2: GSM modem (1-port) converter now attached to ttyUSB2
usbcore: registered new interface driver option
drivers/usb/serial/option.c: USB Driver for GSM modems: v0.7.1
#

Thanks for the information!

You seem to be running one of the "infamous" kernel versions that have an IGNORE entry for this device ID in "unusual_devs.h". That might be the reason why the switching is taking so long to complete.

Some devices want to be initialized as a storage device at first.

Good point, Josh. Thanks for the info. I shall look into that.