Welcome To Play4Fire! This Will Teach You How to Install Play On Your Kindle Fire. This Will Not Work With on the older 4.x.x.x versions of Kindle Fire OS (Operating System). It will only work with 5.x.x.x versions of Fire OS. Kindle Fires released 2015 and later, have version 5. Some 2014 models might have OS 5 as well.You will not need to root your device to proceed.