To ensure the privacy of our students and allow for easier transition from student to student, we perform factory resets on our Kobos whenever they are returned to us. This process will take about 20 minutes, although much of the time you will not need to attend the Kobo.
When the Kobo has finished resetting itself, it will ask you to plug it into the computer. Do this.
Once you plug it in, language selection will appear:
It will then ask you to set up with wireless or computer. You can set it up wirelessly, but it's easier to set it up with the computer, so plug it in and open Kobo Desktop.
Once you've unplugged it, it will run some more updates on itself, then restart. The next screen will ask you if you want to set it up with computer or wireless - choose wireless.
It will ask you to set timezone:
It will check for updates once more - it should not find any - then it will be ready for use!