System 7.1 is what Apple calls a Reference Release, and was the first ever System that had to be bought. It was never available for download. (Search this Forum for an explanation of why Apple was not able, because of the presence of licensed software from others in its releases, to make it 'free'. Sssh. It is possible to get a downloadable 7.1, but it is localized for German-speakers.) How did you get 7.1 onto the PB 160 if you don't have your own copy?

Persuading the 160 to emulate Lazarus may take you a while. In the meantime, and although it may invite you to convert your files to its notion of respectability, for which you can make copies of the existing, FileMaker Pro 3 will probably run on your upgraded 540.

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