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About System Integrity Protection

The new SIP (System Integrity Protection) feature introduced in macOS El Capitan prevents LiteIcon from changing many icons, including:

Modifying these icons requires disabling SIP. Since this process is a little bit tedious and tweaking macOS internals is not recommended by Apple, it's up to you to decide if it's worth it.

Follow these steps to disable SIP:

  1. Restart your Mac, holding down the Command-R keys until the Apple logo appears, to boot into Recovery mode.
  2. From the Utilities menu, select Terminal.
  3. At the prompt type the following command and press enter:
    csrutil disable
  4. Restart your Mac and LiteIcon should allow you to change all icons.

After changing the icons, you should re-enable SIP by following the above steps, but using csrutil enable instead.