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how do i change core application icons?

I am running 10.15.7 on a mac mini from 2012, i can't update any further. I have been adding custom icons for all my apps, however, when I try to change the icons for the core apps (i.e., system preferences, app sore, notes, photos, messages, etc.) it doesn't let me, when I follow the step by step tutorial from apple, (Change icons for files or folders on Mac – Apple Support (AU) ) using the method apple suggested (copy and pasted buttons in the top bar) but the paste button is greyed out. I need any other strategies to get around the restrictions apple has placed. I am willing to try using the terminal if possible, however, keep in mind I am using 10.15.7 so it may be different. I have downloaded all my icons from macosicons.com.


I even tried entering the package contents section thru the applications tab in finder, but I can't add my own images into it, nor remove the current .icns that are in there.


any solutions??


p.s I have heard people say to use "csrutil disable" but I have no clue what that is, or how to use it


Posted on Oct 22, 2022 10:52 PM

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7 replies

Oct 22, 2022 11:14 PM in response to hamilton277

hamilton277 Said:

"have heard people say to use 'csrutil disable' but I have no clue what that is, or how to use it"

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About csrutil disable:

csrutil disable

This is a command performed in the Terminal. It disables System Integrity Protection --something not to mess with. So, let that be.


Change Core Icons:

As for changing icons, you only option for builtin apps is to change its size through screen ratio. These are builtin apps, and you cannot mode them.

how do i change core application icons?

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