My iMac is running OS X El Capitan but I have no software update available to install ? I can't download some apps as it says my operating system is too old ?
My iMac is running OS X El Capitan 10.11.16 but I have no software update available to install. I can't download some apps as it says my operating system is too old ? (sorry I'm not very tech). I contacted apple and downloaded Mojave but it says this version is not working ?
iMac 21.5″, OS X 10.11