So, I followed the instructions as you mentioned for the COMBINATION app https://idoneapps.com/forum/index.php?topic=740.0
Please see the log file, which I just sent to you. The app shows success and asks to reboot the phone. However, if I start after reboot the app again, it shows SIM LOCKED.
So, it looks, like QK1 without root does not work. Please check the log and advice if there is anything else, what I can try. Thanks!!