Aye, i also thought of Rooter, and even tried its firmware, but it doesn’t install. However, even if it would work, it’s an overkill – my modem is supported by usb-modeswitch and is working fine on big Linux, so it has to be possible to get it to work on Open WRT too.
On real usb-modeswitch logging can be enabled. I haven’t found a way to do so on the version of usb-modeswitch which is used by Open WRT. Here’s the log file from a Linux PC where the modem works fine:
USB_ModeSwitch log from Sun Aug 26 09:47:34 2018
Use global config file: /etc/usb_modeswitch.conf
Started via upstart
Raw args from udev: /1-1.2
Bus ID for device not given by udev.
Trying to determine it from kernel name (1-1.2) ...
Use top device dir /sys/bus/usb/devices/1-1.2
USB dir exists: /sys/bus/usb/devices/1-1.2
SCSI dir exists: /sys/bus/usb/devices/1-1.2
Warning: SCSI attribute "vendor" not readable.
Warning: SCSI attribute "model" not readable.
Warning: SCSI attribute "rev" not readable.
Check class of first interface ...
Device is in install mode.
Use interface (null)
----------------
USB values from sysfs:
idVendor 0af0
idProduct d055
manufacturer Option Wireless Technology
product Globetrotter GI0505
serial Serial Number
bNumConfigurations 1
bConfigurationValue 1
devnum 4
busnum 1
----------------
bNumConfigurations is 1 - don't check for active configuration
Found packed config collection /usr/share/usb_modeswitch/configPack.tar.gz
Searching entries named: /usr/share/usb_modeswitch/0af0:d055*
Searching overriding entries named: /etc/usb_modeswitch.d/0af0:d055*
SCSI attributes not needed, move on.
Extract config 0af0:d055 from collection /usr/share/usb_modeswitch/configPack.tar.gz
config: TargetClass set to ff
config: NoDriverLoading is set to active
Driver will not be handled by usb_modeswitch
! matched, now switching
Unbinding driver
Command to be run:
/usr/sbin/usb_modeswitch -W -D -s 20 -c /run/usb_modeswitch/current_cfg -u -1 -b 1 -g 4 -v 0af0 -p d055 2>&1
Verbose debug output of usb_modeswitch and libusb follows
(Note that some USB errors are expected in the process)
--------------------------------
Read config file: /run/usb_modeswitch/current_cfg
* usb_modeswitch: handle USB devices with multiple modes
* Version 2.2.5 (C) Josua Dietze 2015
* Based on libusb1/libusbx
! PLEASE REPORT NEW CONFIGURATIONS !
DefaultVendor= 0x0af0
DefaultProduct= 0xd055
TargetClass= 0xff
MessageContent="55534243785634120100000080000601000000000000000000000000000000"
NeedResponse=0
Success check enabled, max. wait time 20 seconds
System integration mode enabled
Use given bus/device number: 001/004 ...
Look for default devices ...
bus/device number matched
found USB ID 0af0:d055
vendor ID matched
product ID matched
device class 08 not matching target
count device
Found devices in default mode (1)
Use interface number 0
Use endpoints 0x01 (out) and 0x81 (in)
USB description data (for identification)
-------------------------
Manufacturer: Option Wireless Technology
Product: Globetrotter GI0505
Serial No.: Serial Number
-------------------------
Looking for active driver ...
OK, driver detached
Set up interface 0
Use endpoint 0x01 for message sending ...
Trying to send message 1 to endpoint 0x01 ...
OK, message successfully sent
Reset response endpoint 0x81
Could not reset endpoint (probably harmless): -99
Reset message endpoint 0x01
Could not reset endpoint (probably harmless): -99
ok:busdev
--------------------------------
(end of usb_modeswitch output)
Check success of mode switch for max. 20 seconds ... Read attributes ...
USB dir exists: /sys/bus/usb/devices/1-1.2
Warning: USB attribute "serial" not readable.
All attributes matched
Mode switching was successful, found 0af0:d055 (Option Wireless Technology: Globetrotter GI0505)Doing no driver check or bind for this device
Check for AVOID_RESET_QUIRK kernel attribute
AVOID_RESET_QUIRK activated
All done, exit