Board Thread:General Discussion/@comment-44322205-20200121102925/@comment-38946466-20200122022941

I think this will depend on which Android version is Fire OS based on, only Mytona can say whether that is really the case. As far as I can see, first 2 digits of Fire OS version sort of correspond to version of Android.

Detailed list of OS version based on device can be found here: https://developer.amazon.com/docs/fire-tablets/ft-device-and-feature-specifications.html.

If the theory is correct, the only potentially problematic devices are from 2011-2013:

Version 4.5.5.5 is based on KitKat (4.4) so that one should be ok, only devices from 2011 and 2012 don't have appropriate OS version.