What is an update?
Update releases are an improved method for delivering bug fixes. Previously files from bug report patch attachments had to be replaced manually. The Update release is a cumulative set of fixes, developed and tested together to ensure quality.
How can I tell which version/update I am using?
When an update has been installed, the Update number appears on the splash screen during startup, and is returned in the release name output by the VER command.
For example:
>> ver
MATLAB Version: 9.3.0.745313 (R2017b) Update 2
Where can I find the links to download the Updates?
You can find a download link for the MATLAB Update Installer in all external bug reports which have been fixed in a specific MATLAB Update.
For R2018b and on-wards, you will be notified that there is an Update available for download. There will be a link in this Update that opens up the installer for the update.
Refer to the following article for installing udpates.
How do I manually install an update for MATLAB R2018b through R2022b?
Please note that MathWorks recommends installing the latest update, which includes the fixes from all previous updates. Also if you do not see a update link listed then there are no updates for that particular release.
Note that the Update Installer does not provide a way to "roll back" the update after you have installed it. The way to go back is to fully uninstall MATLAB, and reinstall the general release, and then install updates to return to your desired update level.
