Steinberg maintains an official Support Download Archive . This is the only safe and legal place to download the update files.
: Fixed refreshing issues in the VST Preset browser and unintentional drive scanning on Mac systems. System Requirements for Cubase 5.5.3 Cubase 5.5.3 Download
Cubase 5.5.3 is a 32-bit application . It does not natively support 64-bit VST3 plugins. If you have a modern M1/M2 Mac or Windows 11, this version will not run natively. It is designed for Windows XP/Vista/7 and macOS Leopard to Snow Leopard (PowerPC or early Intel). Steinberg maintains an official Support Download Archive
