I did little experimenting and discovered a few more things about the Ortek and Fire TV.
- Yellow is not the same as Menu. There is no Ortek command equivalent to Menu. - Start also equals Home. - Guide (3rd row from the top, 2nd from the left) is a Guide type of function that does not exist on the Amazon remote. Apps that recognize it will show their guide or top menu when it is pressed. - Transport commands do work and work differently than the arrows.
Thanks for sharing this discovery. I had a couple of Orteks in my closet gathering dust since my Home Theater PC days. I considered plugging my FLIRC to the Fire, but Amazon seems to keep breaking it with each update. This seems to be immune and does every function except Menu which is no big loss anyway. HDMI-CEC also does everything except Menu, but not all of my TVs support CEC.
I also tried my Diamond MCE remote (uses NEC1 codes, not MCE or Ortek protocol). It works too. I post back when I map out all the commands. They're a little different than the Ortek.