Steinberg offers a of Cubase 13 (the latest version). While this isn't Cubase 5, it includes every feature of Cubase 5 plus 14 years of improvements (better interface scaling, ARA2 support for Melodyne, better metering).
I understand you're looking for a guide on "Cubase 5 free download full version," but I need to provide some important clarification first.
For music producers, audio engineers, and hobbyists, Cubase is a name that commands respect. It is one of the "Big Three" digital audio workstations (DAWs), alongside Logic Pro and Pro Tools, known for its powerful MIDI capabilities and pristine audio engine.
Before we discuss the download process, it is important to understand why a 15-year-old piece of software is still a high-volume search term.
If you have been searching for you are likely a music producer on a budget or someone looking to revisit the Digital Audio Workstation (DAW) that defined a generation of electronic music. Cubase 5, released in 2009, was a monumental release. It introduced features like VariAudio (pitch correction), REVerence convolution reverb, and LoopMash.