diff --git a/usage/download-packages.rst b/usage/download-packages.rst
index 85ba867..c31957e 100644
--- a/usage/download-packages.rst
+++ b/usage/download-packages.rst
@@ -4,6 +4,10 @@ Download Packages (download)
 Using the “download” flag you can download any of the scanner packages
 for Windows, Linux and macOS.
 
+.. note:: 
+   THOR Util can not download THOR binaries and signatures whose license was obtained through the ASGARD Management Center.
+   Use the Management Center API for this. Only the Nextron Customer Portal is accepted as a license source.
+
 This option is especially useful in cases in which you have to download
 the updates on an Internet connected machine and bring them to a system
 without Internet access.
diff --git a/usage/upgrade-and-updates.rst b/usage/upgrade-and-updates.rst
index 49852c8..7dbb4c7 100644
--- a/usage/upgrade-and-updates.rst
+++ b/usage/upgrade-and-updates.rst
@@ -4,6 +4,10 @@ Upgrade (upgrade) and Updates (update)
 You can download updates for THOR with ``thor-util.exe``
 (Windows) or ``thor-util`` (Linux, macOS).
 
+.. note:: 
+   THOR Util can not update THOR binaries and signatures whose license was obtained through the ASGARD Management Center.
+   Use the Management Center API for this. Only the Nextron Customer Portal is accepted as a license source.
+
 Running ``thor-util --help`` shows three options that seem to have a very
 similar meaning: "upgrade", "update" and "download".