Where are we supposed to download this from please?

How to get the 4.4?

     1. Check-in to Your Profile.

     2. In Your Profile click: Product (757 Captain for FSX family) > Extended Download Service and download the 4.4 products to any folder on your computer.

     3. Uninstall everything you have installed from the 757 Captain family (all blocks, -300, -Freighter, ACE, Sound) from your computer.
     (Start> Programs> Captain Sim> 757 Captain> ).

     4. Install* the downloaded files on your computer in the following order:
     - Base Pack (csp751_4400.exe)
     - 757-300 (csx753_4400.exe) or 757 Freighter (csx754_4400.exe)

     5. Restart your computer.

* - The 4.4 will overwrite previously installed freeware liveries and/or other modifications of the original product. Prior to uninstall please backup all data added to the original product.

And one moment else - this patch for FSX version only, there all about FS9 version, which no more supported by dev team, unfortunately
They "dropped us on the street", and say, "live as you like".