Open RustDesk
Go to Settings
Open the About section
Check for updates
Download and install the available update
Restart RustDesk after installation
If no update option is available, download the latest version from the official RustDesk website
Install the new version over the existing one
Reopen RustDesk and verify the version number
On Linux, update RustDesk using your package manager if it was installed that way
On mobile, update RustDesk through the App Store or Google Play Store