How to install Flash on Mac OS X
This guide will guide you through the process of downloading and installing Adobe Flash on Mac OS X.
Please note: the version numbers shown in these screenshots reflect the latest version at the time these guides were made; in time these version numbers will become out of date; so please don't get confused by this!
Visit Adobe's site and download the installer
To install Flash you must first download the installer program from Adobe.
Visit Adobe's "Get Flash" page: https://get.adobe.com/flashplayer/
Click the "Download now" button.
If you are using Safari, Safari will automatically start downloading the installer to your Downloads directory. If you use a different browser, it may prompt you where to save the file.
The installer will then download to your computer.
Unpack and run the installer
Depending on which web browser you're using and your browser's configuration, your browser may automatically open the ".dmg" file which was just downloaded.
If it doesn't automatically open, once the download has completed, open your Downloads folder and find the "dmg" installer file.
Ensure that it is actually the same file you just downloaded from Adobe. Double click it to mount/open the installer container.
The "dmg" container file you have downloaded from Adobe contains the installer program. Double click it to run the installer.
You will be prompted if you really want to run the "Install Adobe Flash Player" program. Read the prompt carefully to ensure that you are actually running the file you just downloaded. Check the file name and the date and time it was downloaded. When you are ready, click the "Open" button.
The Flash Installer program will now run. You are then prompted to read and agree with the Terms and Conditions. When you have done that, click to tick the checkbox and then click the "Install" button.
The installer program will need to put system files on your computer and by default it will not have permission to do this. To grant the installer program permission to modify and create system files you need to enter your username and password and then click the "OK" button.
Adobe Flash Player will now install itself.
Allow Flash to check for updates
Adobe Flash is able to regularly check with Adobe if there is a newer version of Flash available to download.
Flash has been found to be vulnerable to a number of serious security problems, so now more than ever it is a good idea to let Flash check for updates.
Be aware that this means Flash will occasionally connect to Adobe's servers to see if there is a new version.
Either of the first two options presented is fine. The first one ("Allow Adobe to install updates") means that any newer versions of Flash will automatically download and install themselves.
Some users may be a bit hesitant about letting software automatically download new versions and install themselves, so they may instead choose "Notify me to install updates". In this case, Flash Player will still check for updates to itself so that you still are aware that there is a new version, but it won't automatically install the updates; you will be prompted to easily download and install it with your consent.
Flash is now installed
Congratulations, you have now installed Adobe Flash.
Remember to always keep Flash up to date to help keep yourself safe and secure online.
You can always check if Flash is up to date by visiting the WhatIsMyBrowser.com homepage.