EC25 uses like a serial modem?

I have a EC25AU module working with QMI or CDC mode.

I would like to use the module like a old serial modem.

is it possible ? I dont know how to do that

I am using openwrt.

Dear Customer,

Of course it is with Linux drivers provide by Quectel. Follow the guide


How to integrate driver into OpenWrt, there are many related topics on

hi, the module EC25 is died thanks to the command AT+QCFG=“usbnet”,3

How solve it EC25-AU doesnt respond AT Commands. IT DIED AFTER A SIMPLE COMMAND

and send me the files. I am not developer. I only need to use the module I bought. Bad device.
can provide source files of USB serial option/GobiNet/QMI_WWAN drivers”

If the module has been set by AT+QCFG=“usbnet”,3 and the module is set to RNDIS mode. It does not went wrong.
You have two choices.

  1. You need to modify the option driver on Linux.
  2. Use the RNDIS driver on Windows.

If you have an Ubuntu PC, I can help you with Remote connection.

On OpenWrt,you can use my menuconfig.