Each release of Firebird has it own gbak.exe.

I am just wondering if I can use any version of gbak to backup/restore any version of firebird database?

For example, can I use gbak.exe from Firebird 1.5 to backup/restore Firebird 1.5/2.0/2.5 database?

Or can I use gbak.exe from Firebird 2.5 to backup/restore Firebird 1.5/2.0/2.5 database?

I have tried it and it seems work. Is it advisable to do so?