Q. HOW DO I IDENTIFY WHICH VERSION OF APPLE IOS FIRMWARE I’M USING?
Apple periodically releases updates to the version of iOS used on the iPhone, iPad, and iPod Touch. This document explains how to identify which version of iOS firmware a device is using.
Step 1. Locate and open the Settings app.
Step 2. locate General within your settings
Step 3. Click on the about section
Step 4. Under Version you will see which version you have.
If you are using a MacBook Pro
1. Click on the Apple icon in the left corner of your screen
2. Click on the heading About This Mac
This will allow you to view what version your MacOS device is currently on, the example below is on version 10.13.3