can't update the Mac IOS

Hi inki_,

Software Update only appears inside System Preferences if you're running macOS Mojave or later.

To get macOS and app updates for a Mac running macOS High Sierra or earlier, check the Updates section in the Mac App Store.

You may look into details for each system &/or configuration to see

what each can be used with; and as such, upgrade to newer macOS.

This page links most macOS versions, to include Big Sur; & earlier.

• How to get old versions of macOS - Apple Support

https://support.apple.com/en-us/HT211683

Good luck & happy trails!

🌞🌿⛵️🌤🎣🏕⛄️🌻

Which exact model is your MacBook? Is it currently running macOS 10.12 (Sierra), as per your tagline?

Note: iOS is for iPhones and iPads, not Macs.

If you want, you can get support here "ikinci el laptop alan yerler"