In https://www.flexmonster.com/doc/updating-to-the-latest-version/
To update Flexmonster without npm, follow this guide.
The link to update flexmonster without npm is invalided.
Hello, Brad,
Thank you for reaching out to us.
Please note that the provided link points to the anchor on the "Updating to the Latest Version" page.
You can access the corresponding part of the page by clicking on the link or using the following URL: https://www.flexmonster.com/doc/updating-to-the-latest-version/#!update-flexmonster-zip.
We hope it works for you.
Kind regards,
Illia