This can easily be done via the Spitfire Audio App. To reset your entire library download or the latest update:
Open up the Library Manager and log in with your account email and password.
- Search for the Library that you wish to reset
- Click on the Library and reset from the "cog" menu
- Choose to "Reset Entire Library"
You can repeat this process for any of the libraries you own.
Note that there is a limit to how many times you can reset your downloads in a certain time frame. If you do exceed your reset limit please get in touch.