Search is definitely the place to start as there are several threads regarding the May update that include posts by us that wireless CarPlay/Android Auto broke and what we did to fix it. There is one here
. I searched for firmware with dates between May 1 and today. You may have to do some reading through lots of posts to find what you need.
That said, several of us using the CarLinKit v3 experienced similar behavior after the May update. Some didn’t. For me, @carlinkitbusiness
pointed out I was 4 firmware updates behind. Once I completed all 4 it started working again. Since yours isn’t by CarLinKit, there’s no guarantees, so YMMV.