If your heart is set on Sylenth1 specifically because of a tutorial series, use the inside FL Studio. Design your sound, record the audio into an Edison slot (or resample to a wav file), and close the plugin. You keep the audio forever.
If you are a beginner using FL Studio, spending 2 hours looking for a Sylenth1 free VST download is 2 hours you could have spent learning (which is legally free and superior). sylenth1 free vst download fl studio
If you are a music producer diving into the world of Electronic Dance Music (EDM), pop, or hip-hop, you have almost certainly heard of LennarDigital Sylenth1 . For over a decade, this virtual analog synthesizer has been a cornerstone in the industry, famous for its rich unison, lush filters, and low CPU usage. If your heart is set on Sylenth1 specifically