Do I need to get an updated version of Adobe PDF to do this? Is there a simple way to do this?
Customer
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Thanks for your message, VeryPDF PDF Editor software has a function to change the file version number to PDF files, you may download PDF Editor software from this web page to try,
https://www.verypdf.com/app/pdf-editor/try-and-buy.html#buy
https://www.verypdf.com/pdf-editor/pdfeditor_setup.exe
After you download and install it, please run following application,
"C:\Program Files (x86)\VeryPDF PDF Editor v4.1\pdftools.exe"
In the setting dialog, you could change the version number to PDF files easily, please look at following screenshots,
VeryPDF