Cant update to mac os catalina 10.15.3
reboot laptop and no installation, but in system there is update for Catalina 10.15.3, what's wrong ?
MacBook Air 13", macOS 10.15
You may need to give the community a little more information before someone can help you.
Like: the hardware model you are using, where are you doing the update from (Mac Os Recovery, Apple store etc..), what Osx did you have before, what is the format of your current internal disk where you are installing the software (APFS, Mac OS extended etc..), what error message do you get and so on...
Thx