@mmanso: You don’t need to do ANY changes to the CHUCK software in order to use arduplane.
The confusion is because the older Parrot DISCO software needed intricate filesystem modifications in order to start the arduplane software. With newer, updated DISCO versions of it’s original software, it’s as simple as pressing the on/off button 3 times in a row.
Just upload first the arduplane to the parrot disco as described here, and you are good to go: https://discuss.ardupilot.org/t/ardupilot-disco-filesystem/26232/2
To completely reverse your changes just remove the file from the DISCO arduplane folder, normally located ftp://192.168.42.1/internal_000/ardupilot/