In case people with KSO want to install Duokan. 1: You need to jailbreak your KSO first - http://yifan.lu/2011/06/02/kindle-3-2-1-jailbreak/ 2: Install Duokan according to step 2 in the method - http://www.duokan.com/forum/thread-18362-1-2.html. I was able to jailbreak my KSO and install Duokan on it, although I uninstall Duokan in the same day. Just didn't like the fonts in Duokan for English.