This tool had been involuntarily leaked by a third-party before TI released it

Perhaps it should be made clearer in the first post that the Lua page recently created on TI's site brings nothing new ?

Yes, that is indeed a welcome change in behaviour
But they probably didn't have much of a choice, even before the involuntarily leak occurred: reverse-engineering would eventually have 1) found the minority part which was not documented yet, and 2) made the 0D encryption fully understood, and independently reimplemented.

Unfortunately, I don't think SDK is referring to C.....

I'm willing to bet they didn't write much for the Lua port. They probably used someone else's Nucleus RTOS code, and just threw in a few specific commands. That means that maybe there will be an exploitable vulnerability....

Of course, I might be wrong, and they might include Asm support, which would mean we wouldn't need such things