How to load USB 3G network card

I'm now using tomato-K26USB-1.28.RT-MIPSR1-112-AIO.trx
My USB 3G network card is HuaWei EC122, DefaultVendor= 0x12d1, DefaultProduct= 0x1001

After USB card is plugged in, tomato can only recognize it as a mass storage, I hope that it can be recognized as mass storage and usb modem.
View attachment 2165

I config the usb_modeswitch.conf as below:
DefaultVendor= 0x12d1

DefaultProduct= 0x1001

MessageContent="55534243000000000000000000000011060000000000000000000000000000"...

How to load USB 3G network card