Please completely uninstall any previous versions including liveries, prior to installing Version 1.1.1
These update installers are only for customers who wish to update from version 1.1.0 to 1.1.1. If you are upgrading from any version prior to V1.1.0, you will need to uninstall that version and a FULL install will be required. See Full Installers above.
For detailed update instructions please check out:
http://qwsim.flight1.net/forums/ultimate-146-service-pack-4-available_topic3177.html
The Ultimate 757 relies on an Add-On Manager developed by FSDreamteam, a FlightSim scenery developer). This Add-On Manager installs automatically, but on occasion a Standalone Addon Manager needs to be downloaded. The latest can be found
here