MCUBoot doesn't work on target

Hi there,

I've created a bootloader and an application which runs fine on the Evalkit EKRAM5 (R7FA6M5BH3CFC)
When I compile the application for our target (R7FA6M5BH3CFP) it also runs fine without the bootloader.

But the combination to bootloader and App on the target doesn't start.

I would expect that simply compiling boolader & app for the target controller would be enough. 

Do I have to make further changes to the bootloader?