Allright I'm kinda confused, because...
Mine worked straight out of the box (and a nice package it was, btw) without any errors!
Obviously, I was expecting that they will be barely visible in direct sunlight. After all, they got the daylight color, and the rings aren't designed to conduct enough lumens. But I'm happy overall, because as soon as you're in the shade, let alone it's a bit darker, they are AWESOME.
Pics coming up.