Popcorn

Popcorn is a hardware jailbreak which works on any firmware on supported hardware.

Popcorn only works on the following models:

PW3

KV

KT2

PW2

KT3

The Kindle Voyage (KV) is compatible with WatchThis on every firmware released for it. It is not recommended to use Popcorn when possible.

Popcorn is quite a sophisticated jailbreak method and requires prior electronics experience. It is not recommended to use Popcorn unless you have prior electronics experience especially if a software jailbreak such as WatchThis is available for it.

Prerequisites

A PC running Linux or Windows (MacOS is not currently supported)
A jumper cable
A soldering iron (recommended)
Steady hands

Getting Started (Windows)

Install 7-Zip
For the PW2, PW3, KT2 or KV download these files: https://www.mobileread.com/forums/showpost.php?p=4217167&postcount=17

For the KT3, download these files: https://www.mobileread.com/forums/showpost.php?p=4288479&postcount=60
Extract the files to a safe location

Getting Started (Linux)

Install imx_usb_loader (via your distro’s package manager)
Download the Popcorn Files and extract them to a safe location

Next Steps

Simply select your model and follow the instructions on the page

PW2 PW3 KT2 KT3 KV

Credits

Original guide written by Neon
Popcorn created by katadelos