You can safely through trusted web preservation networks like the Internet Archive . While casual search queries often look for "Flash 1.1," users are almost always seeking Flash Player Version 11.1 , which was the definitive and final legacy release tailored for older Android deployments, retro operating systems, and standalone SWF file execution.

Here is the most important part.

Here is the reality of Flash Player 1.1, why you cannot (and should not) download it, and the dark underworld of fake downloads waiting for you.