can't update the Mac IOS

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!

🌞🌿⛵️🌤🎣🏕⛄️🌻

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.

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

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

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