That’s what’s I’ve seen and Edge and JET
The Edge and Jet units are basically digital gauges. Toyota encrypts their software so a simple programmer won't work. OV Tuning was able to do something.
BD claimed they were able to break the encryption but I have heard that their product caused a lot of engine failures.
Lessons hard learned. No way warranty would cover the engine failure I’d imagine, even with Magnuson Moss.