Unfortunately I'm not able to upgrade to Sierra. Currently running Mac OS X El Capitan 10.11.6. This one runs fine, except for Bluetooth, which is crashing sometime ... But if I want to upgrade to Sierra I did everything mentioned on the welcome page for Clover and Mac OS Sierra (Putting the right kexts in the Clover kext/Others folder). I put there everything except for AppleHDA. So if I want to upgrade to Sierra, the Installation screen will freeze at approximatley 1% of the bar. If I start with -verbose it says Program abonded with error code 1 or so ... Next off I tried to do safe mode, went fine so far, but then it kept saying Invalid sandbox profile for PID xxxx (Did this from 0 to ~2000). This took like 1 1/2 hours, so I shut down the system. Mac OS X El Capitan is still working, so I guess there was nothing done to the hard drive. Would be great if someone could help me!
EDIT: Of course I started without caches and with injected kexts