Switch do currently support the upload of flash files and 3rd party code flash. However, we are now advising against this format.
Flash is resource heavy, suffers from lag and drains computer processing power which can affect laptop battery life. With exploits surfacing on a regular basis security also remains a major concern.
The industry is now moving away from flash and we are now looking at alternative technologies such as HTML5. Browsers have started to block flash on websites, making it increasingly easier to browse the web Flash free as many sites have opted away from bloated flash animations and graphics.