I have spent the last 2 days doing lot of reading and it looks like there is no way to fix this right now.
I would have hoped that some of the Devs here would have a way to just wipe the entire device and setup normally like you can with Samsung Tablets.
I will keep hope alive
Ok so I got a KF fire 8.9 HDX a week ago.
It was came with 14.3.5 (trying to remember)
ADB did work and was setup properly, no issues there (Windows 7)
I could not root it with any of the tools posted.
I noticed that all the tools seemed to work with 14.3.10.
I manually updated it to 14.3.10
I was able to root it.
I did install Safestrap
I was trying to flash a 2nd ROM and I guess I did something wrong.
I did do a restore to Rom2 from my backup. I also did that for ROM 1 to make sure I could reboot the unit.
Now the problems:
1. I am stuck on the Kindle Fire screen (the first screen just the white Kindle Fire logo). I can reboot into the stock restore/recovery.
2. I did wipe and picked option 2 to restore
3. Nothing happens on reboot, it just sits back on the white Kindle Fire logo
I suspect that the bootloader on this unit was blocking fastboot therefore I could not finish the proper setup with the tools here to install 2nd boot loader TWRP.
Can someone please assist.