It's not that easy on the latest versions at least through Calibre where there's a very common issue that if your Kindle is connected to wifi it will remove sid

It's not that easy on the latest versions at least through Calibre where there's a very common issue that if your Kindle is connected to wifi it will remove side-loaded books (through a "bug" or something else). There's more info on that issue in many threads like this: https://www.reddit.com/r/Calibre/comments/1g7yt0r/psa_the_new_kindle_2024_are_bad_for_sideloading/ https://www.reddit.com/r/Calibre/comments/1g7yt0r/psa_the_ne...