title_body: Kindle paperwhite ver.5.7.2.1 - how to bring back one-click book open?
upvoted_answer: GO back to previous home screen menu following these steps:
  
  
  Go to home screen and press menu button (It is on top right of screen) 
  Select settings
  Select device options
  Select personalize your kindle
  Select advanced options
  Turn off home screen view 
  
  
  and hopefully now you are back to your old screen view.
  
  Let me know if it worked.