Hi there,
first of all, I’m a newbie at all this linux stuff, so please forgive my language. 
I’ve recently had to do a fresh install of Hassbian.
It all worked well, even booted from USB (which took me days alone), but when I did a sudo apt-get -y upgrade it all went down the river.
Apparently there’s a newer version of Raspbian available, which breaks the install.
I fixed it by downgrading the kernel via sudo rpi-update b9becbbf3f48e39f719ca6785d23c53ee0cdbe49
That’s the hash of the corresponding kernel version 4.9.41.
But now, there seems to be a discrepancy between the kernel, Hassbian and the system, which leads to instability. I couldn’t ssh into my system, even though ifconfig showed, that the connection was up.
Two reboots later, the system is up and running again, without me changing or doing anything in between except reboot.
I wonder, why nobody has posted anything similar, yet.
I am doing nothing out of the ordinary, except boot from USB (with SD inserted, though because else I would get a coloured boot screen.)
