I opened the kindle reader app for the first time in my Fire HD 8 (7th gen, Fire OS 5.6.4). It told me to choose some books based on my interest. After choosing and clicking OK, the books' samples started downloading. But only one book downloaded successfully. When I click on that book from 'Books' tab, it doesn't open, a small 'i' appears on that book icon. When I click a pop-up appears saying -
"Your kindle needs a software update to view this content. Please visit amazon.com/kindlesoftwareupdates for instructions on how to install updates"
I visited the page but it says your updates will download automatically when on wifi. I tried updating from settings, but it says all updates are already installed.
What I have to do to read those books now?