Now in 2012, the latest version of adobe flash player is version 11.3. Flash player plugins usually will perform update automatically. But if cannot do that, you can download it from its official site. Flash player support famous browser such as Internet Explorer (IE), Google Chrome and also Mozilla Firefox.
You can upgrade adobe flash player plugin on your browser using this link. Don't worry, this is will download flash player from official site, so you will avoid from viruses or other malware. I hope this information can be useful.