As I said in my original post, I'd already read about the difference between my old V1 & the V2, but the new one I have is a V2.1. TP Link wouldn't change the firmware version unless they'd changed...

I had to get my C3150 (EU) V1 exchanged under warranty & was suprised to find they've sent a new V2.1 firmware version to replace it. I can find details of the differences vetween V1 & V2 but nothing...