I bought a cheap 950 on eBay. It was running build 10240, and had a prototype registration app popping up every few minutes asking for my @microsoft.com e-mail. It had an early beta version of Continuum and didn't had Windows Hello. Surprisingly enough, Double Tap to Wake was enabled and working on it! I thought that build 10240 leaked for the 950 and that the previous owner just flashed it to get Astoria working. I wanted to try all the new features it had, and the software it was running was pretty much buggy. All in all, this was going to be my main phone, so I decided to flash with the stock software without investigating much about it. After I flashed it with the WDRT, I noticed that 10240 got leaked for the 930, not the 950. I lost something pretty valuable forever...