1.
[root@stlinux]#echo "12d1 155b" > /sys/bus/usb-serial/drivers/option1/new_id
[root@stlinux]#

2.
Изменил в файле  12d1:155b

# Huawei E173new
DefaultVendor= 0x12d1
DefaultProduct=0x155b
TargetVendor=  0x12d1
TargetProduct= 0x1001
Huawei mode 1
MessageContent="55534243000000000000000000000011060000000100000000000000000000"


[root@stlinux]#/etc/ppp/usb_modeswitch -v 0x12d1 -p 0x155b -c /etc/ppp/switch/12
d1:155b

Looking for target devices ...
 No devices in target mode or class found
Looking for default devices ...
   found matching product ID
   adding device
 Found device in default mode, class or configuration (1)
Accessing device 002 on bus 001 ...
Getting the current device configuration ...
 OK, got current device configuration (1)
Using interface number 0
Using endpoints 0x01 (out) and 0x81 (in)
Inquiring device details; driver will be detached ...
Looking for active driver ...
 OK, driver found ("usb-storage")
 OK, driver "usb-storage" detached

SCSI inquiry data (for identification)
-------------------------
  Vendor String:
   Model String: Mass Storage
Revision String: 2.31
-------------------------

USB description data (for identification)
-------------------------
Manufacturer:
     Product: Mobile Connect
  Serial No.: not provided
-------------------------
Setting up communication with interface 0
Using endpoint 0x01 for message sending ...
Trying to send message 1 to endpoint 0x01 ...
 Device seems to have vanished right after sending. Good.
 Device is gone, skipping any further commands
-> Run lsusb to note any changes. Bye.

[root@stlinux]#


3.
[root@stlinux]#dmesg | grep ttyUSB
[root@stlinux]#


P.S. Почему то перестал запускаться mc