Kindle sales peaked in 2015 because no one uses them anymore, tablets & phones do that job & much more
be that as it may, one of my Kindles was bought & registered in 2011, someone else shared a link about how to "jailbreak" it but i couldn't understand the directions
i'm thinking now the thing to do is just to fill it up with as many books as possible & keep it as a backup???
right now it has 122 pieces of vintage fanfiction + some classics...