How to reset the ignored Software Updates list
Did you accidentally ignore a Software Update and now you need to install it? Getting the ignored updates back is easy, you can do it either though the Software Update app or the command line, whichever you prefer.
From the Software Update app, click on the “Software Updates” menu and navigate down to ‘Reset Ignored Updates’ – that’s it.
Resetting the ignored Software Updates list from the command line is easy too, just launch the Terminal and type the following command:
softwareupdate --reset-ignored This will immediately reset the entire ignore list and all of the ignored updates will become visible again, and works for both System Updates and Software Updates.