Can I root Amazon Fire 7 on any of these versions?

[I_NEED_HELP_12]

I have two devices I want to root:

1. fire 7 (9th gen) running on 6.3.1.5 FireOS
2. fire 7 (7th gen) running on 5.6.6.0 FireOS

Is either one of these devices rootable?

Any links of how-to's would be helpful.

 

[B. Diddy]

I moved this to the Kindle Fire forum for more specific traffic.

 

[mustang7757]

Best place is XDA Forums they have this sort of information