Avoid "Uncharted 3 PC Installer.exe" files. These are not real.
If you are searching for a "Skidrow" installer for Uncharted 3 on PC, you need to be aware of several critical facts regarding scene groups and platform releases. There is No Native PC Version uncharted 3 pc download skidrow install
Go to File > Install Firmware and select the Sony .PUP file you downloaded. Configure Settings: Avoid "Uncharted 3 PC Installer