I received a Kindle Fire HD for free yesterday. As someone that absolutely detests fire os, I have been looking everywhere for a way to flash a custom rom to this bad boy. But, alas, I can't seem to find any clear answers on how to get root access.
  
  info:
  Software: 11.3.2.2
  Hardware: Kindle Fire HD 7" second gen (8gb)
  I can run adb commands.
  
  Can anyone help me? 
  Read more: Kindle Fire HD 7 root access?