Here are some guides with step by step instructions:
How to install ClockworkMod Custom Recovery on the Amazon Fire TV
How to update ClockworkMod Custom R...
For those who need a step-by-step guide with screenshots:
How to Root a Fire TV 2 by installing rbox's Pre-Rooted Image
How to disable the app blacklist and re-enable FireStarter on a rooted Fire TV
More details here for those who need it.
pm disable com.amazon.tv.settings/com.amazon.tv.settings.tv.AppDisableService
pm enable de.belu.firestart...
No, it is not possible to root 18.104.22.168 on any device yet. I track all rooting methods for all Fire TV and Fire TV Stick models here: http://www.aftvnews.com/root
aftvnews: Just as a small critique (well - thats how it started out, anyways... ;) ) - when people looked at you in the past to provide context, this is what they got as first responses in return.
First off, thank you for posting this long and ...