How to restore airport utility

Question

This morning my iMac asked me to do an update which contained a new version of airport. This also required a restart.
After the install airport can no longer detect either my time capsule nor an airport express. It displays them with a message stating they used to be on the system and do I want to forget them.
Time Capsule and its folders show up OK in finder.
I decided to try and restore the previous airport utility but time machine (which again proves the time capsule is there) tells me it cannot restore airport becuase it is part of the OS.
Apple care want 49€ for assisting on this issue.
Does anybody know how to do a restore?
-Paul-

Answer 1

PaulWhite wrote:
It was not possible to either delete or rename the original in the utilities folder. Surely If I am adminstrator I should be able to do things like that?
You'd think so, but Apple has tightened-up the security on a lot of things, apparently trying to protect us from ourselves (some folks delete all sorts of critical stuff, thinking they don't need them and it will save space!).
You can delete it via Terminal, or some 3rd-party apps.
Open the Terminal app (in your Applications/Utilities folder). Be very careful with this app.  It's a direct link into UNIX, the underpinnings of OSX, but without the protections of OSX.
In Terminal, the prompt looks like this:  <Computer Name>:~ <your name>$
(where <your name> is your short user name).  It's followed by a non-blinking block cursor.
Copy, do not type, the following after the prompt:
sudo rm -rf /Applications/Utilities/AirPort\ Utility.app
and press Return. You'll be prompted for your Admin password (which won't be displayed).  Press Return again.
There may or may not be any messages displayed; you'll know it's done when you see the prompt again.