How to enable ADB interface for new EC25-E modem

We have made new 10 board with Quectel EC25-E LTE modem, We found that ADB is not enable after power on devices. I am using inside windows, It is detecting “Quectel USB AT port, DM port and NMEA port”, but not detecting ADB interface in my device manager.
Also, I have tried to enable ADB via AT+“usbcfg”,,,,,<at_port>,,,,, but got +QCFG: “usbcfg”,0x2C7C,0x0125,1,1,1,1,1,0,1
So, 0 means is not enable, How can I enable ADB?

please search, that was discussed previously

I read all previous comments but I can not found detailed information, Can someone have document or steps then pls share with me. I am facing it since three days.

Hi @tahir.shaikh

Could you write the FW verison you are using, you can send at+qgmr to check
If you are using standard verison, please refer to the following.
1- Get the qadbkey number and share with me.
Send at+qadbkey? via AT port to get the number, like this.

2- Then we will give the passwd for the adb, and you can use at+qadbkey=“the passwd”

3- Enable adb
Send at+qcfg=“usbcfg”,0x2C7C,0x0125,1,1,1,1,1,1,0
// Please note that the PID and VID configuration is correct. You can use at+qcfg=“usbcfg” to query first
// And the 6th place is adb. ( 1,1,1,1,1,1,1 )



I’m having same issue I cant connect to Android devices also I used the AT command to see if my Quectel EC25-AF modem is ADB enabled and recieved an ERROR message.


+QADBKEY: 35787336