Windows driver for EG21 that works with ADB

Technical Subjects Driver
1

Hi,

I’m having an issue on windows where ADB can’t detect the EG21G, it comes back with “? Device” when i execute “adb devices” on the command line.

I can see that ADB is enabled on the device, at+qcfg=“usbcfg” returns +QCFG: “usbcfg”,0x2C7C,0x0121,1,1,1,1,1,1,0

Which USB driver should I be using?

I can’t see any specifically referencing the EG21 in the download zone. I’ve tried:

Quectel_LTE_Windows_USB_Driver_RNDIS_V1.0-1 (adb cant see it at all)
Quectel_LTE_Windows_USB_Driver_For_MBIM_V1.0-2 (adb returns ?)
Quectel_Windows_USB_DriverQ_NDIS_V2.3_EN-1 (adb returns ?)

Note that the COM ports seem to work OK, no matter which windows driver I use.

Any help greatly appreciated!

2

OK I’m a dummy, I can talk to it fine, windows ADB just defaults to “? Device” since the modem has no ADB serial number.

3

Yes in windows system update, you can find adb driver.