[Q] ICS OTG ZTE MF820 LTE dongle - Android Q&A, Help & Troubleshooting

when I use OTG cable plug the ZTE MF820 LTE Dongle, android can detect its model but the 3g/4g not work .
I checked there is a file
/etc/usb_modeswitch.d/19d2_0166
###########################
ZTE MF820 4G LTE
DefaultVendor= 0x19d2
DefaultProduct=0x0166
TargetVendor= 0x19d2
TargetProduct=0x0167
MessageEndpoint=0x01
MessageContent=55534243123456782400000080000685000000240000000000000000000000
CheckSuccess=20
here is a part of the message from the logcat:
D/MountService( 146): sendStorageIntent Intent { act=unmounted dat=file:///mnt/usbhost1 (has extras) }
D/MountService( 146): volume state changed for /mnt/usbhost1 (unmounted -> removed)
D/MountService( 146): sendStorageIntent Intent { act=android.intent.action.MEDIA_REMOVED dat=file:///mnt/usbhost1 (has extras) }
D/[CORE_SERVICE]( 2057): Receive media broadcast
D/[NOTIFICATION]( 2057): ignore a notification because of not accepted
I/StorageNotification( 213): Media {/mnt/usbhost1} state changed from {unmountable} -> {unmounted}
D/VoldCmdListener( 82): volume shared /mnt/sdcard ums
I/StorageNotification( 213): Media {/mnt/usbhost1} state changed from {unmounted} -> {removed}
.
.
.
D/APPTrafficLogic( 1867): 10053--android.process.acore--0--0--
I/USB3G ( 92): event { 'add', '/devices/platform/sw_hcd_host0/usb1/1-1', 'usb', '', 189, 9 }
I/USB3G ( 92): path : '/sys/devices/platform/sw_hcd_host0/usb1/1-1'
I/USB3G ( 92): VID :size 5,vid_path '/sys/devices/platform/sw_hcd_host0/usb1/1-1/idVendor',VID '19d2
I/USB3G ( 92): '.
I/USB3G ( 92): PID :size 5,Pid_path '/sys/devices/platform/sw_hcd_host0/usb1/1-1/idProduct',PID '0167
I/USB3G ( 92): '.
I/USB3G ( 92): cmd=/system/etc/usb_modeswitch.sh /system/etc/usb_modeswitch.d/19d2_0167 &,
I/USB3G ( 92): excute ret : 0,err:No such file or directory
what is the problem? thank you for any advice.

---

I rename the 19d2_0166 to 19d2_0167
and run
/# system//etc/usb_modeswitch.sh system/etc/usb_modeswitch.d/19d2_0167
Reading config file: /etc/usb_modeswitch.d/19d2_0167
* usb_modeswitch: handle USB devices with multiple modes
* Version 1.2.0 (C) Josua Dietze 2011
* Based on libusb0 (0.1.12 and above)
! PLEASE REPORT NEW CONFIGURATIONS !
DefaultVendor= 0x19d2
DefaultProduct= 0x0166
TargetVendor= 0x19d2
TargetProduct= 0x0167
TargetClass= not set
TargetProductList=""
DetachStorageOnly=0
HuaweiMode=0
SierraMode=0
SonyMode=0
QisdaMode=0
GCTMode=0
KobilMode=0
SequansMode=0
MobileActionMode=0
CiscoMode=0
MessageEndpoint= not set
MessageContent="55534243123456782400000080000685000000240000000000000000000000"
NeedResponse=0
ResponseEndpoint= not set
InquireDevice disabled
Success check enabled, max. wait time 20 seconds
System integration mode disabled
usb_set_debug: Setting debugging level to 15 (on)
usb_os_find_busses: Found 003
usb_os_find_busses: Found 002
usb_os_find_busses: Found 001
usb_os_find_devices: Found 001 on 003
usb_os_find_devices: Found 002 on 002
usb_os_find_devices: Found 001 on 002
error obtaining child information: Inappropriate ioctl for device
usb_os_find_devices: Found 019 on 001
usb_os_find_devices: Found 001 on 001
error obtaining child information: Inappropriate ioctl for device
Looking for target devices ...
searching devices, found USB ID 1d6b:0001
searching devices, found USB ID 0bda:8176
searching devices, found USB ID 1d6b:0002
searching devices, found USB ID 19d2:0167
found matching vendor ID
found matching product ID
adding device
searching devices, found USB ID 1d6b:0001
Found devices in target mode or class (1)
Looking for default devices ...
searching devices, found USB ID 1d6b:0001
searching devices, found USB ID 0bda:8176
searching devices, found USB ID 1d6b:0002
searching devices, found USB ID 19d2:0167
found matching vendor ID
searching devices, found USB ID 1d6b:0001
No devices in default mode found. Nothing to do. Bye.
is that miss something ?