Due to the confusion on how to setup flashcast and install pwnedcast, I decided to make a tutorial Video. Sorry for the crappy video/audio, I need a new webcam.
NOTE: this will work on a chromecast that has not been setup yet, and we recommend rooting a device before setup to prevent any accidental OTA update.
Hope this helps!
also, bonus points for anyone who finds the "teaser" in the video.