You need to read the docs more carefully. It's explicitly stated on every hack thread that you:
• Need the exact correct file that matches your device's S/N
• Never, ever, ever, reboot with a custom .bin file
• That a greyed out "UYK" link means you've got the wrong .bin file for your model.
As for Duokan, you're not likely to hear much of anything about it from any of us, for various reasons.