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Defender Basic Updater

Updated on Feb 17, 2026

Notice:  As this product life has ended there will be NO new updates released.  This device is only compatible up to Mac OS 10.11.

The last released version for the Defender Basic is 4.1.1.9. Below are the download links and corresponding SHA256 Checksum Values.

Download for Windows

8fd47d3d835656f7422e50319e1157c232d81516c23b486f12af8b508d5df86a

Download for Mac

2c27543af44690301f28e100c1924cb3d9fe7ebafc182aee6fbfd76a9c131e0a

Attention: As always, although it is unlikely that updating your device will affect your data we recommend you backup your data as a precaution prior to performing a device update.

For quick and easy steps to check the values below please refer to our SHA256 Checksum Utilities page.

Kanguru Application SHA256 Checksum Values

Important! The checksum values listed below are for .zip download and not for the .exe or .app files contained inside.  If you unzip the contents and run the SHA256 checksum on the file contained within, the checksum values will be different then are shown here.

For assistance in updating your Defender device on a Mac system, please review our knowledge base article "How to update your Defender drive on Mac operating systems".

If you require a program to unzip the contents of a compressed .zip file, please download the open source Windows utility 7-Zip: www.7-zip.org

If you are experiencing issues attempting to download this file when using Google Chrome please review our article "Downloading Kanguru Application Using Google Chrome".