Last month Amazon announced that it was cutting off Kindle Store access to 13 older Kindle models, and now that change has officially been implemented. Here’s what that means. Amazon cuts off older Kindle models from accessing Kindle Store If you’ve been holding on to an older Kindle model, now might be the time to upgrade. That’s because as of last week, Amazon has cut off 13 older models from being able to access the Kindle Store. Users of these non-supported models can no longer purchase, borrow, or download new content on the Kindle Store. Here’s the full list of Kindles that are no longer supported: Kindle (2007) Kindle 2 (2009) Kindle DX (2009) Kindle DX Graphite (2010) Kindle Keyboard/Kindle 3 (2010) Kindle 4 (2011) Kindle Touch (2011) Kindle Fire (2011) Kindle 5 (2012) Kindle Paperwhite (2012) Kindle Fire 2 (2012) Kindle Fire HD 7 (2012) Kindle Fire HD 8.9 (2012) Amazon gave the following statement to ZDNET about the change: “These models have been supported for at least 14 years — some as long as 18…