Brazil does not have any interest in getting involved in the Argentine problems, they create their problems and stay with them, but do not involve Brazil.
Gripen is not a Brazilian plane, is Swedish, and Brazil has no patent rights or trade on this plane, it's crazy to find that Brazil can promise something you can not keep.
The truth is that the Argentines only cause problems to the Brazilians.
But it seems that with the new minister of defense, they have forgotten the Gripen, less harm.