With a jailbroken Kindle you can, for instance, install koreader[1], a feature-rich alternative ebook reader application that enhances the somewhat limited capabilities of Kindle’s native reader.
For instance, with koreader you can open djvus, epubs, fb2 (if you’re onto those formats), but what makes koreader especially appealing to me is that it is a far better pdf reader than Kindle’s native.
Or you can look for a pool of available hacks[2] that make Kindle’s overall usage far more suited to your own particular needs. One example is the screensavers hack that allows you to choose either to use your own images (somewhat interesting if you’re onto customizing them to your tastes); or you can, as I prefer, to use that last displayed screen as the screensaver, as this allows you to keep a book’s opened page in display while you are taking notes or doing some other book research related task.
Some of these new features are now so essential to my Kindle’s experience that I can’t imagine myself using an original one without jailbreaking it. Also, I have my Kindle since 2015 and I’m in no hurry to get a newer or more capable model. As it is, it is very tailored to my academic needs.
I just got out my Kindle Keyboard (Kindle 3) and tried it out... the 3G still works! It's a bit slow, but you can launch the browser from the Experimental window, choose the Wikipedia bookmark, and it still loads. I was able to search for the entry for the above referenced book and read it.
(That said, it's probably the first time I've used my Kindle Keyboard in months. I mostly use my phone or Samsung tablet for reading Kindle now.)
I highly recommend koreader. I use it on a Kobo Aura HD, and it's really excellent. It's much nicer for lots of things than staring at a computer monitor.
For instance, with koreader you can open djvus, epubs, fb2 (if you’re onto those formats), but what makes koreader especially appealing to me is that it is a far better pdf reader than Kindle’s native.
Or you can look for a pool of available hacks[2] that make Kindle’s overall usage far more suited to your own particular needs. One example is the screensavers hack that allows you to choose either to use your own images (somewhat interesting if you’re onto customizing them to your tastes); or you can, as I prefer, to use that last displayed screen as the screensaver, as this allows you to keep a book’s opened page in display while you are taking notes or doing some other book research related task.
Some of these new features are now so essential to my Kindle’s experience that I can’t imagine myself using an original one without jailbreaking it. Also, I have my Kindle since 2015 and I’m in no hurry to get a newer or more capable model. As it is, it is very tailored to my academic needs.
[1] https://github.com/koreader/koreader
[2] https://www.mobileread.com/forums/showthread.php?t=180113