Do you still have an older Apple WiFi router? Do you still need to configure it?
Take a look at your AirPort Express and locate the model number in the faint print. Do you you have an A1084 or A1088 model? Unfortunately, these older versions of the Express are no longer supported by the newer operating systems (Mac OS X Lion, Mountain Lion, Mavericks or Sierra).
For example, Sierra OS is showing the following message:
“This version of AirPort Utility doesn’t support this base station.”
while on iPhone (iOS) you will get the following message:
“The AirPort Express named “Base Station ****” cannot be set up by this software. Go to apple.com for more information.”
If you want to reconfigure your router you have to:
1. Optional: If needed, reset your router. Press the reset button until the indicator LED is flashing.
2. Install AirPort Utility 5.5.3 for Windows on a Windows based laptop.
3. Use AiPort Utility to configure your router. Save your setting.
Your router indicator LED will flash to confirm the new settings. You will lose your internet connection (if had one) during this process.
4. Connect your Mac and iPhone to your old Apple router.