My keyboard kindle is fantastic, good battery life and love the page turning button.  I don’t need support from Amazon, only need to download and read new books.  Have no desire to read already purchased books again.  No longer possible to use the side-load option as they have also removed the USB option.

What does jaibreaking the kindle mean, how do you do it, and how would that help me continue to read Amazon books?  I am already using Calibre but the big issue now is - how to get books from Amazon onto my keyboard kindle.

dont tell me I have to buy a new kindle as there is no option with a page-turning button that I need.