Okay, well, obviously I am very terribly confused and I am so sorry that I offended the Yun people with my question about a SHEILD..
It was my understanding that the Yun and an Arduino with a Yun shield were the same.
But thank you for sharply pointing out that I have absolutely no business being here or asking questions.
However --- I HAVE BEEN TRYING TO UPGRADE TO THE LATESET 1.5.3 -----
It must've been the topic that threw me. I'll go somewhere else, where I can get knowledgeable help.