finishing old install from El Capitan to Sierra

[Ryckblick]

After reading one more thread (beginning with the linked post): https://www.tonymacx86.com/threads/...e-950-pro-z170mx-gaming-5.203111/post-1345777

Yet another take:

I read about SIP. Currently my BooterConfig is 0x28 and CsrActiveConfig is 0x3. Do I need to change the latter to 0x67?

And I have no values for ROM and MLB in my config. Does that somehow matter?