Small tool which actually is not unrooting your device. It's faking unrooted status to the download mode.
So the steps would be.
1. kdz stock kk
3. use the tool
4. unroot via superSU
ALL credits go to @Drachenminister , 1. and 2. , remember to thank him
I've only made it "one click method" which I know you like
Please leave any comments, I hope this tool will make your life easier.
Thx for support