Sage 2014 (v20) New Install Issue

SUGGESTED

Hi

Used Sage 2014 (v20) for years.  Need to install on new PC as old one slowly dying. Installed v20.03.09.355 and asked for updates - software says it is latest version. But when I try to open my data, it tells me to upgrade to version 20.4.9.364 which my data is created in.  How can I find a download that will update me to the required version?  I can find nothing on the Sage site that is helpful. Thanks