Script to switch a Huawei Modem (E173 I think?) from Mass Storage to Modem in Ubuntu using usb_modeswitch

switch_huwai_modem.sh

# Script to switch a Huawei Modem from Mass Storage to Modem in Ubuntu using usb_modeswitch
# (after inserting usb, run repeatedly until device is switched to modem.
# If you wait too long device wont switch and you need to remove it,
# reconnect the usb device and run script again)

# Btw. If you stumble on this while looking for a solution to your Huawei modem problems... There may be better ways:
# https://help.ubuntu.com/community/DialupModemHowto/Huawei
# http://askubuntu.com/questions/179324/huawei-e173-on-ubuntu-12-04
# http://ubuntuforums.org/showthread.php?t=1605484
# etc... (there's tons of highly confusing info out there. good luck.)

# If this is successfull `lsusb | grep Huawei` should give you
#   Bus 003 Device 075: ID 12d1:1436 Huawei Technologies Co., Ltd.
# instead of 
#   Bus 003 Device 077: ID 12d1:1446 Huawei Technologies Co., Ltd. E1552/E1800/E173 (HSPA modem)
# notice that it should be :1436 instead of :1446. Your particular make of modem might need a different number there. Happy hunting.

# PS this is ridiculously difficult, someone please please please patch ubuntu :)

sudo usb_modeswitch -v 0x12d1 -p 0x1446 -M 55534243000000000000000000000011060000000000000000000000000000 -V 0x12d1 -P 0x1436 -s 50 -m 0x01

Thank you so much for this script! I upgraded to Ubuntu 15.04 and this is the only solution that made my Huawei E173 work again. The weird thing is, it worked out of the box in Ubuntu 14.10.

This looks worked for my Huawei TATA Docomo 3G thanks (Ubuntu 16.04)