The other day I was looking if there was a possibility to read ePUBs in Kindle, and if yes, how to. Just for fun.

Jailbreak

First you have to jailbreak downloading the file.

Unzip it. Find update_*_install*.bin where * is your kindle and firmware version. And copy it to (your kindle's) root.

Eject Kindle and press HOME > MENU > Settings > MENU > Update Your Kindle.

Launchpad

Download this file and unzip it.

Copy update_launchpad_0.0.1c_*_install.bin where * is your kindle and firmware version. And copy it to (your kindle's) root.

Eject Kindle and press HOME > MENU > Settings > MENU > Update Your Kindle.

After this, there 2 readers that you can install: fbKindle and Cool Reader. Each one has its pros and cons. In terms of "usabillity", one (fbKindle) allows links and shows furigana as when a browser can't interpret them (inline) but doesn't show tables propertly. However, I think it's not developed anymore. The other one (Cool Reader) doesn't allow links, furigana it's shown with line breaks, does show tables propertly and it seems that it's still developed. Here I show how to install Cool Reader (the other one is almost the same)

Cool Reader 3

The formats read by the Cool Reader are fb2, txt, html, rtf, chm, epub, mobi. It was created (and it's "main objective") for reading fb2, that's why ePUB (and surely HTML and chm) are not read "propertly".

Download the file and unzip it.

Copy folders cr3 and qtKindle to Kindle's root. Copy file from launchpad\cr3.ini to the launchpad folder (root).

Eject Kindle. Quickly press (in home) Shift Shift Space, a "success!" message it's shown on the bottom left corner. Press Shift C R, a "success!" message appears and the program loads.

To open files, you must press Menu key or press S

Basic Hotkeys:

• Alt Back - Exit program
• Alt Shift - Collapse \ deploy Cool Reader
• In preferences dialogue: Home - saves options, Back - quit without saving