To find your client version please use this guide here.
The latest versions will be at the top, you will need to ensure you download the upgrade for the appropriate account (Business User or Single User) and operating system, if you have not renamed the client shortcut it should be called either "SDSL Single User Client" or "SDSL Business Cloud Backup".
Selecting appropriate options will start the download of a .exe file, open this when downloaded, you will be asked "Do you want to allow the following program to make changes to this computer", please select "yes". You will then be advised "Installation wizard will uninstall the previous version of the software shortly. Do you want to continue?" - press "yes" on this too. You will then get the Setup Wizard.
Press "Next", the following page is terms and conditions, you will need to agree to these before upgrading. Selecting "I accept the agreement" will enable you to proceed via "Next".
The wizard will then need the location to store the client, if you would like it in a different location to where it fills out by default please use the "Browse" function. If you are fine with the default location please press "next".
The next window will be "Select Additional Tasks" which will ask you if you would like the software to be installed for "Anyone who uses the computer" or "Me Only". When selected please press "next".
The last page will confirm the settings you have added ready for install, you can use the "back" button to go back and change any of these settings. When ready to install upgrade please press "install".
You will be shown the progress of the installation.
When completed you will see the below window. By default "Launch SDSL Business Cloud Backup" will be selected. If you want to check anything in the client you can leave this ticked and press "finish". If not please deselect and press "finish".
Your backup client has now been updated.