i just bought two teensy 4.1 to prototype for a project of mine, that maybe i will sell in the future.
If all works out i was thinking to design the electronic on a single board, and just buy your bootloader.
When the teensy 4.1 arrived it did with the linked text that i can’t use it in commercial product essentially.
Is this true? Is the only bootloader subject of the same conditions?
Because that would be a problem for me and would change the vision i have on using teensy
The units are subject to that paragraph; they are not to be re-sold :-/
And that’s ok, those will just be my way to approach the microcontroller and check for the connection to be right, after this they would become just hobby microcontroller of mine.
I was talking about, is the bootloader part of the teensy, bought alone just to be soldered on a pcb subject of the same paragraph?
It’s not the bootloader that has export controls, it’s the processor chip on the board that does. You can not resell the board to certain countries without breaking federal law.
What countries are currently on the restricted list, as defined by the U.S. government?
Cuba, North Korea, Sudan, Syria, Iran, Russia, Belarus, and specific regions of Ukraine (Crimea, Donetsk, and Luhansk)
See the page at the link below for more info.
Export Compliance - SparkFun Electronics Export Compliance - SparkFun Electronics
As long as your product doesn’t go to those places you should be fine but you should consult a lawyer before selling your export controlled product, the consequences ate pretty severe if your product finds it’s way to the wrong place.
so the problem is given by the NPX iMXRT1062 on it? if i went to a bare pcb this chip would give the same problem?
Yes, that is the processor and the part that is export controlled.
So even just using this chip is a problem? 
It says in the invoice that i need permission from the USA to even make it change hands
The blurb essentially means the purchaser (which is you) needs to be the end-user (which is you, for hobby purposes?)…otherwise obtain special permission. If you aren’t re-selling or shipping it to somewhere else, ostensibly you should be good. If you are doing either of those things you should consult an attorney.
But just using it is fine 
