[FethryDuck]

Oh, when I said:
"Unpack my archieves somewhere, and overwrite the files on the Kindle." - do this on your computer, and by adding those files, one at a time, you may see where and how things change. If for some reason something goes wrong, - it will try to restart the Duokan-system. If not it may boot up in the official Kindle version. Correct your last entry, and try to restart it. In Amazon Kindle -> menu->settings-> restart. When the Chinese page appear, hit "Q" for Duokan and "W" for Amazon official version. It will default to the system you have set under system-settings.

If any can add improvements, please do. If anyone could improve the install with a script, please do. If someone have source code, please - let us see it .

Thanks..

UPDATE - added my system-settings pages, which is my original translation ( not the english version that is released now. )