You don't need a physical "portable" installer if you use Avid Link to manage your software.
What do you use most often (Windows, macOS, iOS)? sibelius portable link
The concept of a "portable app" that lives on a USB stick is a relic of an older era of computing, well-suited for simple utilities. Professional creative software like Sibelius has evolved beyond that model. Instead of fighting against its design, the best approach is to embrace the modern, official, and legitimate solutions that Avid and its competitors offer. You don't need a physical "portable" installer if
Provides the same workflow as the desktop version (as shown in this video ). sibelius portable link