> What I don't want is I buy an old Kobo on eBay, and find out it's not jailbreakable, or requires some library which requires a different version of Ubuntu, or

> What I don't want is I buy an old Kobo on eBay, and find out it's not jailbreakable, or requires some library which requires a different version of Ubuntu, or whatnot. I understand what you're getting at. When I was following some of the article links with respect to the Remarkable 2, I had the exact same concerns when they were discussing how you need to wait for the patches to be updated to new firmware versions since the screen driver was integrated into the software. Needless to say, I have also been bitten by such things with other devices. That said, you picked a poor example. Kobos aren't locked down in any meaningful way. Anyone with a knowledge of Unix and how the update process works can inject their own software. There are no secrets. There is no encryption. At least when it comes to the operating system. It is the way hardware should be, albeit it is so rare for it to be so that it is easy to jump to conclusions.