The full SDK is around 500 MB. If you only want the tool, proceed to Option B (community re-pack).

Run the installer. If you encounter an error (like "S1023"), it is often due to a conflict with newer C++ Redistributables already on your system; you may need to uninstall existing versions of the "Microsoft Visual C++ 2010 Redistributable" temporarily to complete the SDK installation. 2. Locate the 64-bit dxcpl.exe