We've been working on this fix and I just checked in with the developer that was responsible for the implementation. He stated that the bug should be fixed and that https://fpdownload.adobe.com/air/browserapi/air.swf should be working. There was a caching issue with the server that should have been resolved on April 11th. If you have a chance, please give it a try and let me know if you encounter any problems.
Thanks,
Chris