I'm almost certain a Kindle Fire HD does not have even close to the requirements to run it. You might be able to get a PLAYABLE at best frame rate if you go into settings, set the Video Backend to OpenGL, and bring the clock speed down to 20%. (Nothing less! It will break.) My Google Pixel can get by, barely, emulating the game. And you better believe I have no graphical enhancements on. Hope this helps. Sorry dude. :/
I've been having the same problem. I've got my hex editor ready to go with my extracted files but the resources are so scarce. I literally made this account five minutes ago in hopes that I could find or contact the legendary @VincentASM. As far as I can tell, the only functional hack of FE9 is @shadowofchaos' maniac mode translation patch.