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#1 2020-11-19 15:52:24

nibirrayy
Member
Registered: 2020-10-14
Posts: 2

4g LTE modem wouldn't switch mode

I am following  this arch wiki
https://wiki.archlinux.org/index.php/USB_3G_Modem

It explains that the modem need to be in a certain mode to be used as a Ethernet adapter otherwise it always mount as a cd drive
Check this section

The problem is that i am not able to switch to "Ethernet mode" using this command

sudo usb_modeswitch -v 161c -p f101 -W -K

I am getting this error

sudo usb_modeswitch -v 161c -p f101 -W -K
Take all parameters from the command line


 * usb_modeswitch: handle USB devices with multiple modes
 * Version 2.6.1 (C) Josua Dietze 2017
 * Based on libusb1/libusbx

 ! PLEASE REPORT NEW CONFIGURATIONS !

DefaultVendor=  0x161c
DefaultProduct= 0xf101

StandardEject=1

Look for default devices ...
  found USB ID 1d6b:0003
  found USB ID 8087:0029
  found USB ID 161c:f101
   vendor ID matched
   product ID matched
  found USB ID 1d6b:0002
  found USB ID 1d6b:0003
  found USB ID 04f3:0903
  found USB ID 13d3:56a2
  found USB ID 1d6b:0002
 Found devices in default mode (1)
Access device 006 on bus 003
Get the current device configuration ...
Current configuration number is 1
Use interface number 0
 with class 255
Error: can't use storage command in MessageContent with interface 0; interface class is 255, expected 8. Abort

Here is the output of lsusb

❯ lsusb
Bus 004 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
Bus 003 Device 003: ID 8087:0029 Intel Corp. AX200 Bluetooth
Bus 003 Device 006: ID 161c:f101 Digitech Systems LTE MIFI
Bus 003 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 002 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
Bus 001 Device 003: ID 04f3:0903 Elan Microelectronics Corp. ELAN:Fingerprint
Bus 001 Device 002: ID 13d3:56a2 IMC Networks USB2.0 HD UVC WebCam
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
 sudo lsusb -v -d 161c:f101

Bus 003 Device 016: ID 161c:f101 Digitech Systems LTE MIFI
Device Descriptor:
  bLength                18
  bDescriptorType         1
  bcdUSB               2.00
  bDeviceClass            0 
  bDeviceSubClass         0 
  bDeviceProtocol         0 
  bMaxPacketSize0        64
  idVendor           0x161c Digitech Systems
  idProduct          0xf101 
  bcdDevice            2.32
  iManufacturer           2 manufacturer
  iProduct                3 LTE MIFI
  iSerial                 4 0123456789

  bNumConfigurations      1
  Configuration Descriptor:
    bLength                 9
    bDescriptorType         2
    wTotalLength       0x006f
    bNumInterfaces          3
    bConfigurationValue     1
    iConfiguration          0 
    bmAttributes         0x80
      (Bus Powered)
    MaxPower              500mA
    Interface Descriptor:
      bLength                 9
      bDescriptorType         4
      bInterfaceNumber        0
      bAlternateSetting       0
      bNumEndpoints           3
      bInterfaceClass       255 Vendor Specific Class
      bInterfaceSubClass      0 
      bInterfaceProtocol      0 
      iInterface              0 
      ** UNRECOGNIZED:  05 24 00 10 01
      ** UNRECOGNIZED:  05 24 01 00 00
      ** UNRECOGNIZED:  04 24 02 02
      ** UNRECOGNIZED:  05 24 06 00 00
      Endpoint Descriptor:
        bLength                 7
        bDescriptorType         5
        bEndpointAddress     0x82  EP 2 IN
        bmAttributes            3
          Transfer Type            Interrupt
          Synch Type               None
          Usage Type               Data
        wMaxPacketSize     0x000a  1x 10 bytes
        bInterval               9
      Endpoint Descriptor:
        bLength                 7
        bDescriptorType         5
        bEndpointAddress     0x81  EP 1 IN
        bmAttributes            2
          Transfer Type            Bulk
          Synch Type               None
          Usage Type               Data
        wMaxPacketSize     0x0200  1x 512 bytes
        bInterval               0
      Endpoint Descriptor:
        bLength                 7
        bDescriptorType         5
        bEndpointAddress     0x01  EP 1 OUT
        bmAttributes            2
          Transfer Type            Bulk
          Synch Type               None
          Usage Type               Data
        wMaxPacketSize     0x0200  1x 512 bytes
        bInterval               0
    Interface Descriptor:
      bLength                 9
      bDescriptorType         4
      bInterfaceNumber        1
      bAlternateSetting       0
      bNumEndpoints           3
      bInterfaceClass       255 Vendor Specific Class
      bInterfaceSubClass    255 Vendor Specific Subclass
      bInterfaceProtocol    255 Vendor Specific Protocol
      iInterface              6 CDC Ethernet Control Model (ECM)
      Endpoint Descriptor:
        bLength                 7
        bDescriptorType         5
        bEndpointAddress     0x84  EP 4 IN
        bmAttributes            3
          Transfer Type            Interrupt
          Synch Type               None
          Usage Type               Data
        wMaxPacketSize     0x0010  1x 16 bytes
        bInterval               9
      Endpoint Descriptor:
        bLength                 7
        bDescriptorType         5
        bEndpointAddress     0x83  EP 3 IN
        bmAttributes            2
          Transfer Type            Bulk
          Synch Type               None
          Usage Type               Data
        wMaxPacketSize     0x0200  1x 512 bytes
        bInterval               0
      Endpoint Descriptor:
        bLength                 7
        bDescriptorType         5
        bEndpointAddress     0x02  EP 2 OUT
        bmAttributes            2
          Transfer Type            Bulk
          Synch Type               None
          Usage Type               Data
        wMaxPacketSize     0x0200  1x 512 bytes
        bInterval               0
    Interface Descriptor:
      bLength                 9
      bDescriptorType         4
      bInterfaceNumber        2
      bAlternateSetting       0
      bNumEndpoints           2
      bInterfaceClass         8 Mass Storage
      bInterfaceSubClass      6 SCSI
      bInterfaceProtocol     80 Bulk-Only
      iInterface              1 Mass Storage
      Endpoint Descriptor:
        bLength                 7
        bDescriptorType         5
        bEndpointAddress     0x85  EP 5 IN
        bmAttributes            2
          Transfer Type            Bulk
          Synch Type               None
          Usage Type               Data
        wMaxPacketSize     0x0200  1x 512 bytes
        bInterval               0
      Endpoint Descriptor:
        bLength                 7
        bDescriptorType         5
        bEndpointAddress     0x03  EP 3 OUT
        bmAttributes            2
          Transfer Type            Bulk
          Synch Type               None
          Usage Type               Data
        wMaxPacketSize     0x0200  1x 512 bytes
        bInterval               1
Device Qualifier (for other device speed):
  bLength                10
  bDescriptorType         6
  bcdUSB               2.00
  bDeviceClass            0 
  bDeviceSubClass         0 
  bDeviceProtocol         0 
  bMaxPacketSize0        64
  bNumConfigurations      1
can't get debug descriptor: Resource temporarily unavailable
Device Status:     0x0000
  (Bus Powered)

The modem cd is not even mounted and when I plugged it into a windows pc the cd drive of the modem mounted but there was just an autorun inf file and a window exe file
there were no linux drivers not even mac os drivers.

Can someone please help me?

Last edited by nibirrayy (2020-11-19 17:16:05)

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