Reseting original firmware patches (more precisely the last one called something with "Sing")

Hi
Is there any way of reseting to original firmware patches (more precisely the last one called something with “Sing”)?
I have the full MidiGuitar version, but accidently wrote another, new patch over the one I hope to restore. :-/
I should maybe note, that I have tried to uninstall and then reinstall the app but that doesn’t seem to bring back the original patch.
Thanks!
Eskil

Open “preferences”, click on “Restore patches”
WARNING: Before you do this, safe the default patches you tweaked under new names: all default patches will be restored to their original settings: your edit to the default patches will be lost the moment you restore them.