One can still get playready keys for non-HD content. I am still unsure how to enable higher qualities.
I would make a tweak but I don't really know how. I haven't done that before. You can modify it while running with cycript though.
Code:
choose(BuiltinConfig)[0]->_mediaServerValidationPolicy = null
will null the media server validation and allow UVD to get the correct key. This with the tweak to disable DashFairplayStreams from this thread allows UVD to function on the current Netflix version. It will only allow the SD streams though.
You can also grab the correct key from memory like this
Code:
choose(NetflixPlaybackSession)[0]->playReadyKey_
actually the current version of UVD and Netflix won't save the audio stream actually.