The APP code needs to redirect the application address.
The application needs to change its address. I'm just changing 0x00000000 to 0x00001000.
What should I change about MCUXpressIDE, please?
You can download a frdm-k22f sdk first. There is a frdmk22f_led_emp_freedom_a000 demo project in SDK_2.7.0_FRDM-K22F\boards\frdmk22f\bootloader_examples\demo_apps\led_demo_freedom_a000.
It use linker file to assign application address. You can refer to its linker file.