I have a failing Macbook Pro and have deactivated the discrete GPU by doing something [editors note: help us help you by detailing what modifications you made to deactivate the GPU].
Now on this machine, once I updated to macOS 10.13.6 it does not accept the "csrutil disable" anymore which leads to the fact that I am not able to go through this process:
I already asked on several other platforms but nobody can explain me why it is not working anymore.
With the following Command (CMD-R-S) it seems that it does not go into the Recovery Single User mode and thus I have no sufficient rights to perform this action (csrutil disable).
Can somebody please help and tell me how to fix this?