
Amazon is making a slew of older Kindle devices obsolete starting in May. This means that you won't be able to download new books unless you find a workaround or purchase a newer model.
As reported by The Verge (and elsewhere), starting on May 20th, 2026 Kindle e-readers and Kindle Fire tablets released in 2012 and before will "no longer be able to purchase, borrow, or download new content via the Kindle Store."