As I’ve repeated a dozen times: you do not know that. It is
just as likely that the software update did pop up, and exist for quite a long time, then stop appearing once the OTA server was killed some
20 months later.
That would mean, for the new owner,
@rking0122, some very unfortunate circumstances he is facing today, but does
not necessarily imply that the TCU was “broken long time ago.” If the previous owner refused or ignored updates for over a year and a half, that would not be a warranty issue.
My point isn’t that I’m right. It’s simply that
we don’t know, and should thus stop assuming.