No, the 6V XHP50.2 is different than the 3V version, you can’t reflow it to a 3V MCPCB.
Boost driver would lose Turbo at 3.7v which was around 8 minutes. The only good thing about the boost driver was 2hrs of High 920 lumens.
Thanks for that info! I’ll look for 3V XHP then.
EDIT:
The worst new of the day: CREE doesn’t make 3V 3000K XHP50.2, just two cold colors are available 
I’ve been holding off waiting for the 5000k version to come back in stock. I don’t buy much of anything anything cooler than 5000k or less than 90 cri anymore.
No, another good thing (and perhaps best thing) is the extremely well regulated consistent output of the boost driver. As a mountain biking light for night riding, this is a big plus! I’ve been tempted to pickup the new version without the 3min stepdown, but I’m turned off by the lack of regulated output and only 6000k tint option.
-Garry
Kewl, I knew none of this about diving. 
Only suggestion I’d make is to have the low-voltage warning come on a lot sooner. Below 3.6V, capacity is pretty much circling the drain. By 3.3V, it starts dropping like a rock. I was just watching this last night doing a capacity test of a coupla 18650s.
If you need more “cushion” to prepare, as in getting to the surface vs just pulling out a backup flashlight, much more notice/warning would be essential.
Could anyone confirm the ANSI measurement of the spare O-rings? Thanks!
Didn’t think I needed to mention that since all boost drivers are regulated? I did mean that though saying 920 lumens for 2hrs, it then dropped to Med.
Whats the Diameter of the stock MCPCB? is there room on the shelf for a larger one? Thinking of doing an emitter swap, don’t know if it’s XHP70.2 or a 5050 size led or something else. Thanks
Came here with the same question. The control ring would make it a good gift for my mom, but the emitter will be swapped for something much warmer than the 6500K that’s currently available. Probably some 3535 emitter on a standard 16/20mm MCPCB.
Just received the SD05, it seems the earlier versions had complaints of ‘loose’ mag ring switches but this version is now too ‘snug’ and a bit rough feeling as well, to the point of bothersome. I have the Wurkkos DL30 and it’s mag switch is buttery smooth so I thought the sister SD05 would be similar, but no. I really like the light otherwise. So to the point. Has anyone had this issue? Is there a way to disassemble the ring switch to maybe grind the detent holes? Of course I’ve lubed and oiled and twisted but with very little improvement. Any help is appreciated.