A collection of manuals and various 3rd party tools for the FS1R. I'm creating a mirror of all of them here because... they may not always be available for download, and secondly, it's rather annoying grabbing all of this from up to four or more different websites.
The FS1R has always been characterized by having little support for advanced editing, total neglect from Yamaha on releasing the mandatory tools for editing formant sequences (FSeq), coupled with a useless interface. In 2021 Robert Skerjanc (https://fs1r.skerjanc.de, now defunct) created the 'Skerjanc Controller' to finally expose all of the parameters for editing the FS1R, however only two batches were done due to the sheer time consuming nature of building such large controllers.
Having an editor for the FS1R remotely is a must, as most things are not even possible on its limited interface anyways.
K_Take's FS1R editor, K_Take's website is located here: https://synth-voice.sakura.ne.jp/fs1r_editor_english.html
3rd party FSeq editors were created in the wake of the problem of Yamaha not releasing theirs.
Wouter van Nifterick's FSeq editor (the first and more prolific/older editor), Wouter's website is located here: https://niff.home.xs4all.nl/fs1r/
Thor Zollinger's FSeq editor, Thor's website is located here: http://www.javelinart.com/fs1r-fseq-editor.html