Nexus 7
From charlesreid1
Transferring Files from Mac to Nexus 7
Download the Android File Transfer software, which enables Mac to know how to transfer files to/from the Nexus's Android operating system.
Link to the software: http://www.android.com/filetransfer/
Once you install it, you should be able to transfer files between Nexus and Mac.
Factory Reset
To reset to factory settings, download the factory image from Google: https://developers.google.com/android/images#razor
We have 2013 flo version of Nexus 7
This corresponds to version 5.1.1 or 6.0.1 on the Google factory images page
From this table: https://github.com/offensive-security/kali-nethunter/wiki#10-supported-devices-and-roms
We had a file named something like razor-mob30x-factory-52684dff.zip
Extract the zip file:
unzip razor-mob30x-factory-52684dff.zip