I think you have your versions reversed the latest versions of Firebird is 2.1.2 I believe you probably are using 1.5 Firebird version, which is still being used by many prople. Try installing the latest Firebird 1.5 version and see if that will let you use your database.

Best Regards

Jack

--- In firebird-support@yahoogroups.com, "skindbeni" <skindbeni@...> wrote:
>
> Hi.
>
> Last year I have worked on a Firebird Database. Now I can't open it. I'm afraid it was build on a Firebird 2.5 server at the time but today I only have the newest Firebird 3.1.
>
> I have also tried to installe the 2.5 snapshot server on another computer but it still can't open.
>
> The error message says (on a Firebird 2.5 snapshot server):
>
> Wrong or obsolete version.
> Unsupported on-disk structure for file FILNAVN; found 11.2, support 11.2
>
> The error message says (on a Firebird 2.1 server):
>
> Wrong or obsolete version.
> Unsupported on-disk structure for file FILNAVN; found 11.2, support 11.1
>
>
> Have you some good advices to me on how I can open the databasefile.
>
> Please don't say, that it is impossible :o)
>
> Best regards
>
> Michael Sørensen
> Denmark
>
> NB: I'm sorry my bad english. I hope you can read and understand it.
>