How can use my Airport Express 802.11n with IOS X 10.9.4?
I have two Airport Express unit (802.11n) used to connect my upstairs and downstairs HiFi amps to my music collection (On a Mac mini and on my MacBook). I keep my software up to date and my Airport Express units have now lost connectivity with my updated computers. They do not even appear in UTILITIES/AIRPORT UTILITY - so I cannot reconfigure. I have tried pressing the reset button and have tried "Googling" it but have had no success. Any suggestions would be gratefully received.
MacBook, OS X Mavericks (10.9.4)