Well allow me to answer to my question
1. Ignition is off while opening Galletto software
2. Choose the appropriate memory layout (p.e. 29F800BB)
3. Open file, select your bin wish to flash
4. Write ECU
5. Press OK on Tension 13V alert window
6. Now open ignition and press OK
7. After 4' moreless, on alert window first turn ignition off, then press ok, wait for the loading bar to finish, turn ignition on, press ok and then exit.