Hi hjhjhj
The RBF must be programmed only once - using S32Design Studio. Then all you have to do is to set up the Configuration Panel you simply set Enable Download Code after Build and BAM Restart Request options.

When the Restart Request dialogue appears on your screen you press the restart button on the Development board and then very quickly the press OK in the dialogue window on PC.
If you do not press the OK quick enough then you need to do again the restart procedure in order to allow the PC bootloader to sync with the BAM from the microprocessor.
Hope this helps!
Best regards,
Daniel