After trying n trying I finally found the root of the problem.

This meant I couldn't copy/paste data as I could previously.

Hi, I had the same problem of my Nexus 7 (2012) suddenly stopping to appear as a disk drive but now as an MTP Device. This worked on my Nexus 5 with Android 5.0 (updated this week) as well as my old 4.4 Android. Of course - you can also just install the android studio SDK and install all the packages for usb drivers.

it will force it to look for a new driver. big thing - DELETE the acer ADB driver when uninstalling. after it is done - select the acer ADB device, right click it, select UNINSTALL then *** this is key *** when uninstalling CHECK THE DELETE DRIVER check box also!ģ) When its done uninstalling and deleting the Acer ADB driver - if it doesn't automatically just start working - unplug the phone and plug it back in - it will usually 99% of the time - just pick up the newly detected usb device and find it as a Nexus and download the appropriate driver really quick and whammo - open up the file manager or whatever default you setup. it might temporarily recognize Nexus 5 and have a ! yellow warning on it until it installs the device driver and it incorrectly identifies as an ACER ADB device. move on.Ģ) In device manager on Windows (I have win 7) - choose the Acer ADB device. Let you computer find the ACER ADB again. Goto Settings, Storage, (three dots in top right corner) Options - brings up 'USB computer connection' - click that, Disable Camera PTP if it is enabled, ENABLE (check) Media device (MTP) - if it is already, uncheck it then recheck it.

Android studio install adb