What are FSX SP1 and SP2 ?

SP stands for Service Pack 1 or 2, which are patches improving FSX. They are available after the game’s release.

Flight Simulator X Service Pack 1 (Click to download) corrects the following issues found by clients after the game’s release :
• Activation and Installation
• Problems linked to the use of additional components
• Improvement of performance
• Problems linked to the content

Flight Simulator X Service Pack 2 (Click to download) improves the following functions :
• Multiplayer compatibility
• DirectX 10

You have to install the Service Pack 1 (SP1), before the second one.
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