Oh me, my Kindle updated to version 5.6 before I had the time to install the jailbreak. I haven't tried reseting it to see what happens, but at this time, 5.6 will not allow you to downgrade your kindle. I've tried three different versions of the software. It deletes the file every time and warns me that a different file was put on the Kindle illegally. I thought you might want to know and so could warn people.