Does anyone know how I can read the contents of IB 7.5 databases, so I can upgrade / migrate them? I tried connecting the files to Firebird 2.5 / Interbase 2020, but they weren't recognized: too old for IB 2020 and too new for FB 2.5. Interbase datapump also doesn't recognize them and ID surgeons FirstAid shows lots of red and little data.
It might be corrupted, but it seems Interbase 7.x is really badly supported, because Firebird split off with Interbase 6, and IIRC, Interbase 7 was a paid version. So there is little software that (still) supports it. I couldn't find any.
Edit: the database version is 11.2, but Firebird also has that version databases, which are different. That's probably the main problem.