This patch is NOT necessary to install the Enhanced Edition. Patch 1.35 can be used as a more lightweight (118 MB) alternative to the 11 GB Enhanced Edition (3.0) patch for the owners of retail copies of the release (1.0) version of The Witcher 2, which requires patching to run.
If an active Internet connection is present the game will be automatically updated to Enhanced Edition when you run the game Launcher and confirm that you wish to update the game to its newest version. As an alternative to auto-patching through the Launcher the Enhanced Edition Downloader, which is available below, can be used.
To patch your vanilla The Witcher 2 installation to Enhanced Edition manually, use the links below. More info on patching below the links.
PLEASE NOTE! This patch is not for Steam. If you use it to patch the Steam version of the game you will render the game incompatible with Steam. The Witcher 2 on Steam is kept up to date, and the a freshly installed game is already 3.4 (the latest version) from the very moment of installation.
Also, note that this patch is NOT FOR THE ENHANCED EDITION, as it already is on this patch’s level (3.0). This patch upgrades the 2011 release version of the game to Enhanced Edition.