😆
Sadly nothing🙈
Yes you can, i just said i makes it easier. And you can till amazon decides you can't... Or maby they will check the email account of you kindle and close your account because of "possibly pirated books" or whatever, they decide not you... Thats my whole point
No but makes it easier to sideload and prevents amazon from owning/changing/deleting "your" books
Amazon disabled the the possibility to download the books you bougth onto your pc and sometimes they change or delete books wich will change the books on your kindle. In the yt video linked the person says the changed for example the cover of books to advertise a new show based on the book.
I Personally use kobo but i have used Thalia or Hugendubel in the past aa well. I think you can use nearly every bookstore and transfer them with calibre. But sometimes you'll get a asc(?) file instead of a epub and then use some software to "convert" it and maybe remove the drm
Have you instructions?
Just seen this post (have not looked into it) https://lemm.ee/pictrs/image/8842cd4a-dc84-4391-b2ab-bbec8d3a6860.jpeg
While i agree with you that a custom os would be really nice, i think the term jailbreak is appropriate since jailbreaking other things like an iphone is also for installing other software not from the manufacturer. But I'm no expert...
Ding, your time is up