I accidentally deleted Siri.app from my applications folder in macOS High Sierra. I don't want to do a reinstall cause I have removed various system, files which I don't need one by one by looking up the processes via activity monitor now reinstall macOS High Sierra would reinstall all those system and missing default Applications, so how can I skip this traditional way of restoring system files via Install macOS High Sierra.app and only install Siri.app via an external source?

I have already checked this answer iTunes accidentally deleted on iMac G5 with OS X 10.4.11 - how to install iTunes? and I guess this is for Mac OS X Tiger 10.4.11 so I didn't took the pain to download the Install macOS High Sierra.app and check it for myself!

  • Only advice: Reinstall High Sierra! And - urgent measure - enable SIP afterwards! We don't know which system files/frameworks/drivers are already deleted! Siri may rely on them and simply restoring the bundle (like in Accidentally deleted a system framework, macOS screwed! may not work. – klanomath Sep 28 '17 at 19:15
  • It is the 5th time I am fully formatting my Mac and reinstalling macOS – Sayan Sep 28 '17 at 19:18
  • What's your goal deleting arbitrary apps/frameworks/system files? – klanomath Sep 28 '17 at 19:20
  • See I have a 1.4 Ghz iMac so running simple codes sometimes become a headache so I was searching for a way to get over this hurdle when I saw that a lot of processes are sucking up huge chunks of memory (useless ones - which I don't know of-course) so I deleted some of those processes and surprisingly the system became faster and more responsive! – Sayan Sep 28 '17 at 19:23
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    Please use guides like 5 Tips to Optimize Mac Performance or How to Speed Up Slow macOS Sierra to enhance speed. And compare the time required to download and install High Sierra five times with the "saved" time. – klanomath Sep 28 '17 at 19:36

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