Steps to Install Adobe Photoshop CS6 on Mac Step 1: Disconnect your Mac with the internet. Recently (), Adobe announced at their Adobe Max conference that they will only have Photoshop available as a subscription and Photoshop CS 6 is the last boxed version of Photoshop. Photoshop now only available as subscription. Look for the subject line 'Your Serial Number' or 'Your Serial Numbers' in your mailbox. You receive the serial number depending on the type of purchase: From Adobe website: When you purchase Photoshop Elements, you receive the serial number in an email from Adobe. The serial number starts with the number 1057. Click 'Help' from the main toolbar at the top of the program once Photoshop is open. How to Find a Photoshop Serial Number Open Photoshop by clicking on the icon located on your computer's Desktop or by selecting it from the 'All Programs' menu, if using a Windows system, or from. Frequently Asked Questions How to find a photoshop serial number?