Airport Express utility problem

My problem began when it seem my Apple Airport Express went into flashing yellow mode. Usually it's simply a matter of unplugging/replugging the unit, but when that didn't work today I did a hard reset of the unit (when I'm guessing I should have unplugged/replugged the modem). Anyway, I tried to reconfigure the unit with its utility, but I'm getting an error message saying my OS is incompatible. I went to CNET and downloaded what the site said was the most current version of the Airport Express utility, no dice. I am currently running High Sierra (10.13.3) on my nine-year-old iMac (3.06 GHz Intel Core 2 Duo/8megs of RAM.



Ideas, suggestions welcome.

via ehMac.ca https://ift.tt/2uJAA2n