When I got my Kindle DX Graphite last year, I updated it to the latest version that runs on it, and that was to
2.5.8.. I do not know how it could have 3.2.1. on it. On mine, using wireless uses up the battery really fast. I used wireless long enough to get it registered, but now I just sideload books to it. By going to "Your Content and Devices" on Amazon, you can download versions of your ebooks for any registered device you have. So, I just download them for the DX Graphite and copy them over. If you haven't registered your device yet, calling tech support at Amazon may help. That's what I did with mine.