
[
Edited for clarity]
All Kindle models from the Kindle 1 to the Kindle PaperWhite 2012 need a firmware update to be able to continue to connect to the Amazon servers. If you don't update by the end of 22nd March, 2016, you won't be able to update over wifi, you'll need to download the update manually and copy it onto your kindle via USB connection.
Here's the
per-Kindle-type versions you need.
Here's the
per-Kindle-type manual update download instructions (you have to click on your Kindle type).
http://www.theverge.com/2016/3/20/11...t-at-this-time