3uTools for Mac – Installation Guide

When installing 3uTools for the first time on your Mac, you may see a warning saying “3uTools.pkg can’t be opened.”

This happens due to macOS security restrictions.

Follow the steps below to complete the installation. It only takes about a minute.

Step 1: Close the Installation Warning

If the system shows the message “3uTools.pkg Not Opened”, click Done to close the window.

Step 2: Allow the Installer in System Settings

    1. Open System Settings.

    2. Navigate to Privacy & Security → Security.

    3. Under the message that says 3uTools.pkg was blocked, click Open Anyway.

Step 3: Confirm Opening the Installer

A confirmation pop-up will appear.

Click Open Anyway to continue and start the installation.