supports playing locally downloaded/stored *.swf files (as long as they're not published for the AIR desktop runtime) + thanks for /u/PornoOnMyAppleIIe for pointing out the hidden option to enable this. If it works for you then consider enabling this option yourself in 'about:config' Select Close in the bottom right to return to the webpage, and reload it if. Make sure Show: on the lower-left hand side has All add-ons selected and highlight Shockwave Flash Player in the list.

browser DPI scaling is disabled due to poor flash support for high DPI displays. Select the Settings cog at the top right-hand side of the window and select Manage add-ons from the menu that appears.

In the new tab, to the right of 'Flash,' click the Down arrow and then Allow. no flash updates/no browser update (update system deliberately crippled so practically will work forever) To the left of the web address, click Lock or Info. You can use my already packaged portable version of Firefox from this link: In addition to the tutorial I also had to break the Firefox update services, because at some point it would update itself silently and break the flash plugin. It bundles the Flash plug-in so you don’t have to download it separately and the browser sync function makes it easy to back up and sync your settings across multiple computers. Following this tutorial I've managed to put together an older portable Firefox browser (ver.70) packaged with an older Flash player (that doesn't contain the time bomb).

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