Thank you, we will wait for support.
...
P.S. So on usb 2.0 will it work? I understand that the update will come in May, and the modem will work out of the box already (no need to do so much manipulation)?

yes please try on usb 2.0 port.
seems something happened
tr@lp:~$ lsusb -v -d 12d1:15e7

Bus 001 Device 005: ID 12d1:15e7 Huawei Technologies Co., Ltd.
Couldn't open device, some information will be missing
Device Descriptor:
bLength 18
bDescriptorType 1
bcdUSB 2.00
bDeviceClass 0 (Defined ...

Any difference if you remove the -I from the usb_modeswitch command line?

this question, I did not understand (


What hardware are you using and what type of usb controller? Is it a Raspberry Pi?

samsung laptop 355V5X-S01 ( description only in Russian )
usb 3.0 controller type (he was in it ...

Your usbmodeswitch log is not complete, there should be more info in the end of it.

yes, corrects
tr@lp:~$ sudo usb_modeswitch -W -I -v 12d1 -p 15e7 -M 55534243123456780000000000000011062000000101000100000000000000
[sudo] password for tr:
Take all parameters from the command line


* usb ...

You're welcome. Here's output:
lsusb -v -d 12d1:15e7

Bus 003 Device 002: ID 12d1:15e7 Huawei Technologies Co., Ltd.
Couldn't open device, some information will be missing
Device Descriptor:
bLength 18
bDescriptorType 1
bcdUSB 2.00
bDeviceClass 0 (Defined at Interface level)
bDeviceSubClass ...

Good day! I have a problem with the above modem.
The operating system does not see the modem maybe because usb-modeswitch not
automatically switches the device mode the modem.
I think the reason - no udev rules for this modem in /lib/udev/rules.d or
/etc/udev/rules.d.
lsusb:
Bus 001 Device 007: ID ...