This is almost the Debian format for adobe-flash updates:
sudo update-pepperflashplugin-nonfree --install
I thought peppermint/pepper used a adobeflash updater that was visable on synaptic but that updated automatically anyway.
Another option is to use get-flash-videos with the url to what flash film you want to view but I think you need to download it first.
Adobe is a pain, it has control over a lot of video sources but will only let you use it if you agree to a lot of tracking and tracing.