Good morning. I honestly do not think you can make this query using Eloquent. What I'm sure of is that if you divide it you can use an expression like this:
// Tabla1, Tabla2 y Tabla3 son los modelos
Tabla1::where('estado', 0)->update(['estado' => 1]);
Tabla2::where('estado', 0)->update(['estado' => 1]);
Tabla3::where('estado', 0)->update(['estado' => 1]);
This is in the documentation of Mass Update
Now there are more options, which by the way are not as elegant:
Using Query Builder
DB::connection('mi_conexion')
->table(DB::raw('Tabla1, Tabla2, Tabla3'))
->where('Tabla1.estado', 0)
->orWhere('Tabla2.estado', 0)
->orWhere('Tabla3.estado', 0)
->update(['Tabla1.estado' => 1,
'Tabla2.estado' => 1,
'Tabla3.estado' => 1 ]);
Using Raw Queries
DB::connection('mi_conexion')->statement('UPDATE Tabla1, Tabla2, Tabla3 SET Tabla1.estado = 1, Tabla2.estado = 1, Tabla3.estado = 1 WHERE Tabla1.estado = 0 or Tabla2.estado = 0 or Tabla3.estado = 0;');
By the way, it seems very strange to me what you are trying to do, but good ...