While the main administrator application is purchased through the App Store, specific version updates and client packages are often available as DMG files from official support pages: Download: Apple Remote Desktop 3.9.2 Client
sudo /System/Library/CoreServices/RemoteManagement/ARDAgent.app/Contents/Resources/kickstart \ -configure -allowAccessFor -specifiedUsers \ -clientopts -setdirlogins -dirlogins yes \ -setmenubarvisible -menubarvisible yes \ -setcontrolaccess -controlaccess fullAccess \ -setrestartmenu -restartmenu yes \ -setvnclegacy -vnclegacy yes \ -user adminaccount apple remote desktop dmg
Once the client is active, use the ARD admin app to scan your network and add devices for management. Recommended Alternatives apple remote desktop dmg
Corrupted download or incomplete DMG. Fix: Verify the SHA1 checksum if available. Redownload from the Mac App Store or Apple Business Manager. apple remote desktop dmg