The small installer is not the real XMM installer.
The small installer is from: http://www.somotoinc.com/ It downloads the same old installer to the temp folder and executes it after it's done with it's own (optional) install.
Lost me there. I get my updates by adding the _update at the end of the full release in download section. I do like it that so i can rollback if i run into problems. In my liveupdatetemp folder has everything you've done and updates from 7.1.3.3 to now. I only do a full install when something doesn't seem to be there.
I cant see how all the Alessio's changes and your fixes fit in a 3mb update.