Originally Posted by zvonchica
For Duokan lite it is necessary to have previously installed launchpad (with uninstalled jailbreak), but for full Duokan 2012 version (from original Chinese website) dated 28.12.2012., user doesn't have to install neither jailbreak nor launchpad.
Duokan lite also doesn't need for neither jailbreak nor launchpad. first step is to be sure to not to have a jailbreak installed on the device.
Launchpad scripts for secondary methods. ie if installer method doesn't work...
Anyway hope you find a way to install.
(BTW: Maybe it is time to update the first post