I just updated from .62 (I think) to .67 .
I had to repeat the process three times for it to work. It would download the update, say install is ready and go black for some minutes after choosing to install it. After that it would reboot and just be back at .62 login screen.
I was already typing this when the 3rd try actually worked. Screen went black, but then actually went to the Sailfish Upgrade screen and finished the update.
Anyone else have this?