diff --git a/Readme.markdown b/Readme.markdown
index 9345293..11bca3a 100644
--- a/Readme.markdown
+++ b/Readme.markdown
@@ -212,6 +212,8 @@ sudo bless --folder /Volumes/USBstick/ --file /Volumes/USBstick/System/Library/C
 
 ### Hosted on third-party servers
 
+This contains a `.pkg` that tries to install the AHT to your system folder. Alternatively right-click it to show the package contents and unpack the `Archive.pax.gz` file inside. The extracted `Archive/System/` folder contains the diagnostic tools and can be used to create a bootable USB stick, as with the other `.dmg` files downloaded from Apple.
+
 * [Bundle](http://arhiva.macforum.ro/files/AHT-iMac10,1.zip)
   - MacBook5,1     Mac-F42D89A9
   - MacBook5,1     Mac-F42D89C8