RE: XPS 15 9550, Thunderbolt NVM firmware issue with Thunderbolt 3 to 2 adapter
I've also got an XPS 15 9550 and I can't get it to recognize the TB16, I plug it in and nothing happens. I'm convinced that the current Thunderbolt firmware support at NVM 16.0 is to blame. I've posted detailed descriptions of this problem on this forum and I haven't got any response from Dell. This is very frustrating that Dell won't support this product!