Yes, as a matter of fact. Why isn’t Iran turning over the black boxes?
1) Pride. They don’t want to admit that a stone aged culture needs the help of a civilized country.
2) Lack of personal integrity. They think everyone has their lack of character, and that the Great Satan can’t be trusted to tell the truth.
Of course, given Boeing’s corporate activities in connection with the MAX, I’m not sure I’d trust them either at this point.
It looked like a pretty big explosion, so the boxes are probably badly damaged, but the Russians or French might be able to do something with them.
Be it would show they shot it down.