Cannot open an updated image with InDesign CS5.5 . How / where do I get upgraded software?
You have to buy a license to CS6 or Subscribe the CC. There is no free upgrade that will allow you to open later version .indd files.
You can ask the person supplying the file to give you a .idml file instead, and that should open in CS5, but it won't be a perfect match in most cases.
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