If you are trying to download this update today, you are likely in one of two situations:

Look for your registered products. If it's there, this is the most reliable way to get a clean installer. 2. Direct Legacy Links (Hit or Miss)

was released in December 2014 . Because it is decade-old software, this is not a standard "update" that you would find in the Creative Cloud app today. It is considered "End of Life" software, meaning Adobe no longer officially supports it, updates it, or sells it.