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androideclipseadb

Eclipse / ADB not detecting Droid Razr M

ADB is no longer recognizing my Droid Razr M (Android 4.4.2).

I'm using the Eclipse ADT bundle (23.0.0.1245622) on Windows 7 64-bit.

I can verify that adb works and detects other phones.

This phone has been working with adb for a while now, but just doesn't work anymore.

So far I've tried the following:

  1. Unplug the phone's USB cable and reconnect to computer
  2. Used a different USB cable
  3. Restart Eclipse
  4. Changed the USB connection to Camera (PTP)
  5. Changed it back to Media device (MTP)
  6. Restart phone
  7. Reboot computer (this has actually worked in the past)
  8. Made sure Developer Options and USB debugging are enabled
  9. Restart adb server with adb kill-server / adb start-server (adb devices always returns an empty list)
  10. Installed the Universal ADB Driver
  11. Factory reset phone

Does anyone have any experience with troubleshooting a Razr M with adb, or have any other ideas?

Solution

  • I finally got it working. Even though I had updated my device drivers with Motorola Device Manager, apparently Windows didn't like the driver. To fix it you have to manually tell the Android USB driver about your specific device's hardware ids, then update the driver in Windows Device Manager.

    First go to Windows Device Manager and under Android Device you should see an entry for something like Android or ADB device. Right-click on it, select Properties, Details, and in the drop-down menu select Hardware Ids.

    They'll look something like this:

    USB\Vid_22b8&Pid_2e51&Rev_0228&Mi_02
    USB\Vid_22b8&Pid_2e51&Mi_02
    USB\Vid_22b8&Pid_2e51&Class_ff&SubClass_42

    Copy those and then navigate to:

    C:\Program Files\adt-bundle-windows-x86_64-20140624\sdk\extras\google\usb_driver

    You'll find a file called android_winusb.inf there.

    Open it up and use your Hardware Ids to add an entry like this under [Google.NTx86]:

    ;Droid Razr M

    %CompositeAdbInterface% = USB_Install, USB\VID_22B8&PID_2E51&MI_02
    %CompositeAdbInterface% = USB_Install, USB\VID_22B8&PID_2e51&REV_0228&MI_02
    %CompositeAdbInterface% = USB_Install, USB\VID_22B8&PID_2E51&CLASS_FF&SUBCLASS_42

    Then add the same entry under [Google.NTamd64].

    Finally, go back to Device Manager and right-click on your Android / ADB device, Properties, Driver, Update Driver and point to the directory where your android_winusb.inf is. It'll give you a warning about not being able to verify the driver. Just ignore it and install it anyway.

    After doing that, I unplugged my device and plugged it in, and it was working fine again over adb.