10.11 SystemLogo.tiff operation not permitted

[gurduv]

Hi
Did anyone found a way to replace the SystemLogo.tiff in El Capitan 10.11 GM?
I would like to replace the regular X logo with my own, which I was able to do in 10.10, but now I cannot even modify this file, which is inside /Applications/Utilities/System Information.app/Contents/Resources/SystemLogo.tiff

[RobertHammen]

System Integrity Protection may be precluding you from doing this... on a test system, you may wish to boot into recovery and disable SIP, then boot normally and see if you can change it. Not even going to ask why you want to do this ;-)

[jarednichols]

/Applications/Utilities

is indeed under the umbrella of System Integrity Protection.

I'll keep my opinions about disabling a key security feature for a trivial thing to myself.