I need to reformat my MacBookPro and install a new version of Yosemite because there is a problem with the current version of Yosemite (lost internet connection etc). The MAC service tells me that I will then loose all extra installed programs including Adobe CS4 (Photoshop/Illustrator). I got the Adobe programs through my job in 2011(?) and they still work just fine for me. My concern is if I will have a possibility to download CS4 through the internet -after my MAC was reformatted- just using the serial number from this old, but ok, CS version? How do I do this? Any advice?
Whether or not your serial number can be used is a matter of trying. Here are some links to get started...
You can also download the trial version of the software thru the page linked below and then use your current serial number to activate it.
Be sure to follow the steps outlined in the Note: Very Important Instructions section on the download pages at this site and have cookies enabled in your browser or else the download will not work properly.