Problem solved, the patched cia was the problem, in fact my "dbs" folder was not clean so FBI dont install the patched cia properly.
After reset the app downloaded in the setting in SYSnand, inject FBI, install DevMenu, install the patched cia to run GBA VC game, I installed the CIA of the GBA VC in SYSnand AND EMUnand, and now the games work fine in EMUnand.
Voilà.