http://www.amazon.com/gp/help/custom...deId=200529700
I just manually installed the 3.3 update on my kindle and my mom's kindle (since there was no way she'd even know how to try and update hers, I'm just grateful she figured out how to read on it after I bought it for her last year, lol). Working good so far. Mine had been on 3.1 previously and my mom's was on 3.0.2. I did the manual updates at the same time and they were both finished at the same time. Easy peasy