ursus, I tried the same command it works with me also and I have now Product ID 1c05.

Now the conclusion is that I have tree different ways to switch the usb modem to serial port each one has different target Product ID

12d1:1001 (using MessageContent ...

@Josh,
Thanks for you respone, I think ursus answered my next question :)
I didn't know that I can convert the usb modem to serial ports using something like http://192.168.1.1/html/switchProjectMode.html
what is interesting is that when I used this method usb modem converted to product ID not like ...

woooooooooow LOM, it works :D

I have now new product ID 1001, the content of lsusb -v is :



Bus 002 Device 006: ID 12d1:1001 Huawei Technologies Co., Ltd. E169/E620/E800 HSDPA Modem
Device Descriptor:
bLength 18
bDescriptorType 1
bcdUSB 2.00
bDeviceClass 0 (Defined at Interface level ...

Hi ewildgoose,
I am trying to do the samething with my 12d1:1f01 (Huawei E353), the goal is to able to use at commands through serial port.
I have read from a thread that switch to serial rather than cdc ethernet can be done if for example I changed the MessageContent
from something like that ...

Thanks for the quick response

Hi all,

I found that after triggering usb_modeswitch command the usb is disconnected and then reconnected again with product ID changed. I tried to search in the code (in function switchSendMessage()) where reset of the usb is done but I couldn't find any.

My question : Is the usb is disconnect ...