Need For Speed Porsche Unleashed - Playing Online

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Hello guys, im trying to play nfs pu on the earacing with a coppied cd. At the first time it asks for the update. Ok, i did the update. After the update the game dont recognizes the cd anymore. Ok again, i downloaded the patch and installed. Perfect but when i try to play online, b00m, it says that i need to download the update again.
What should i do ?
Thanx a lot.

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