Hello...
This is my long story cut short

Got brand new 9017 PW2 5.4.3.2. Jailbroke it using 1.14N.
Installed CR3 according instructions.
It would not launch. Then according the forum suggestions updated to 5.6.1.0.2.
Here goes the sad part: got OTA update and CR3 started to show error saying that this Kindle is not authorized for such a tricks like tests of developers...
OK... according to
https://www.mobileread.com/forums/sho...d.php?t=203326 it seemed that I needed to reinstall MKK or to repeat 1.14N jailbreak... But Both ways "Update your kindle" is greyed out. Is that the END?

All I wanted was working CR3....