In case it's helpful for someone else, here's the steps I used to work around this. Note that I'll probably need to manually clear the alternatives entry later when the checksum file is available.
This is just a dirty approximation of what the update-flashplugin-nonfree script does. Don't do this if your unsure you can undo it later. 1. Grab the latest flashplugin from Adobe. https://fpdownload.adobe.com/get/flashplayer/pdc/24.0.0.194/flash_player_npapi_linux.x86_64.tar.gz 2. Extract it in to a scrap directory, and get libflashplayer.so out of it. 3. As root, copy libflashplayer.so to /usr/lib/flashplugin-nonfree 4. chmod libflashplayer.so to 644, if it's not already. 5. chown it to root:root 6. Check your alternatives for flashplugin. If it's listed, it should be working in your browser of choice already. If not run: # update-alternatives --quiet --install \ /usr/lib/mozilla/plugins/flash-mozilla.so flash-mozilla.so \ /usr/lib/flashplugin-nonfree/libflashplayer.so 50 7. Test it, and you're done.
