title_body: Do Kindles get firmware updates?
upvoted_answer: Yes, they do!
  
  In fact at this page you can find the update for your kindle (if it's not a kindle touch, then it's called kindle 5th generation), with the following information (bold is supplied):
  
  
    We have a new, free software update available for your Kindle (5th Generation). This update automatically downloads and installs on your Kindle when connected wirelessly; however, you can also manually download the software and transfer the update to your device via USB cable.
  
  
  This means that, yes, it is possible that your Kindle automatically updated itself downloading the new firmware online.