macOS Sierra Installer DMG Download for Mac: A Step-by-Step Guide

Are you still using an older version of macOS or looking to install a specific build on your Mac? If yes, this article is just what you need. Here's how to download and install the macOS Sierra 10.12.6 installer via DMG file.

Why Would You Need This?

macOS updates are usually delivered through Software Update in System Preferences > About This Mac > Software Update. However, sometimes these methods may not work as expected due to various reasons like:

1. Unstable or slow internet connections

2. Corrupt downloads from the App Store

3. Needing a specific build of macOS for development purposes

Regardless of your reason, fear not! We've got you covered with this easy-to-follow guide on how to download and install the macOS Sierra 10.12.6 installer via DMG file.

Step-by-Step Guide: Downloading & Installing macOS Sierra Installer from App Store

Before we dive into the nitty-gritty of downloading and installing, make sure your Mac meets these minimum requirements:

1. Your machine should be running MacOS High Sierra (or later) as a base operating system.

2. Ensure that you have enough free space available on your startup drive (~15 GB recommended).

3. Back up all important files & data before proceeding.

Now let's get started!

### Step 1: Open App Store

1. Click the Apple logo at top left corner of your Mac screen and select 'App Store'.

2. If you don't see it, type 'App Store' in Spotlight (⌘+spacebar) or use Finder to locate Applications > App Store.

### Step 2: Search for macOS Sierra Installer

1. In the search bar at top right corner of the App Store window, type 'macOS Sierra'.

2. Click on the result that says 'macOS High Sierra' and then click 'Update'.

### Step 3: Download & Install macOS Sierra 10.12.6 DMG File

The download process may take a while depending on your internet speed. Once downloaded, follow these steps:

1. Double-click on the downloaded dmg file (should be named something like 'macOSSierra.dmg').

2. Follow the prompts to begin installation.

### Step 4: Complete Installation & Reboot Your Mac

Once installed, you'll see a window asking if you want to 'Continue' with the installation or 'Cancel'. Click 'Continue'.

You're almost done! Once the installation is complete, your mac will ask you to restart. Click 'Restart' and wait for it to boot up into macOS Sierra 10.12.6.

And that's it!

If at any point during this process you encounter issues, feel free to leave a comment below with more details so we can help troubleshoot further!

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