Hi @KLivingstone,
Where exactly is the existing old brochure PDF published? If you can find it in the file manager, you can upload an updated version right there: Upload files to use in your HubSpot content
This would mean that you wouldn’t have to update the places where the brochure is referenced, you would update it under the same link. All places where the old link is used would now point to the new brochure.
If you can’t find the old file in the file manager, you would have to check where you can edit the page that’s showing the old PDF - and then replace the link there. To create a file link, use the file manager (linked above). Once uploaded, you will get a URL which you can place in your assets.
Documents (this is what you, probably mistakenly, used) are a sales feature, meant to track how prospects engage with files: Upload and share documents
They’re not meant to be used for publicly available files.
Let me know if you have any follow-up questions!