Created Emunand > Exosphere > installed a theme > Tried to install Tinfoil but I coudn't because I noticed that every game gave me an error code so I was limited to applet > Removed the theme > > Tried to install different type of sigpatches > Saw that I could try to boot in maintenance mode (I did nothing else in maintenance mode) > Every game says it's damaged [!]The only other exploits are a firmware-specific browser exploit called Deja Vu which was patched out after firmware 4.1 and the modchips. As for the pipeline, nobody has stated that they are looking for another exploit so chances are there may never be another exploit in the future. However the future isn't set in stone so anything could happen but I would not hold out any hope. Anyway, if you are able to hack a console, there are homebrew applications that can play video files.
Did you do anything before this issue started happening?