The FlashErase example project in the STM32Cube_FW_L4 here:D:\STMicro\STM32Cube_FW_L4_V1.13.0\Projects\NUCLEO-L4R5ZI\Examples\FLASH\FLASH_EraseProgram\Src seems to imply that it's possible to erase and write to the same bank of flash that you are exe...