Install Android 4.2.2 onto Kindle Fire (original)UPDATE: DONE! SUCCESS!

[Keysplayr]

This method only requires a standard USB>miniUSB cable:
How to Root & Convert Kindle Fire HD 8.9 into Pure Android Tablet!
https://www.youtube.com/watch?v=hUW6KARo8Y4

That method did not work on the first gen Kindle. I tried. I was able to root the kindle, but It would not let me install TWRP or FFF. Or even access fastboot mode. All this became possible ONLY with the modified microUSB cable.