--- In firebird-support@yahoogroups.com, "robertgilland"
<robert_gilland@...> wrote:

>
> We have been using Firebird 2 rc 2.
> We ran a backup and then tried to
> restore in Firebird 1.5 we got this
> error:
>
> Expected backup version 1, 2, or 3. Found 7
>
> We now cannot go back.

Providing you have not used any features only introduced in FB 2, you
have two options:

1) Use the gbak from FB 1.5 to create the backup file.
2) Use a datapump tool (eg clevercomponents IBDatapump)

Adam