I remember I first updated the firebird engine and than used gbak.
No problems.

--- In firebird-support@yahoogroups.com, "Matheus Degiovani" <matheus@...> wrote:
>
> Hello,
>
> When performing the migration from FB 2.5.1 to 2.5.2, can I use the
> gbak.exe from 2.5.2 for both operations (backup and restore) or should I
> backup with the 2.5.1 gbak and restore with the 2.5.2 gbak?
>
> Thanks.
> --
> Matheus Degiovani
> Gigatron Software e Treinamentos Ltda.
> (18) 3642-9008
> MSN: matheus@...
>