It's a convoluted process, but Firefox pings the update server, which returns a list of proprietary blobs to potentially install. It looks like this with Cisco

It's a convoluted process, but Firefox pings the update server, which returns a list of proprietary blobs to potentially install. It looks like this with Cisco's OpenH264 plugin and Adobe's CDM: https://aus4-dev.allizom.org/update/3/GMP/36.0a1/20120222174716/WINNT_x86-msvc/en-US/nightly/default/default/default/update.xml https://aus4-dev.allizom.org/update/3/GMP/36.0a1/20120222174...