Hi @Ragnar ,
I truly apologize for my late reply. Thank you very much for your patience. (Due to recent global vacations, it has been difficult to get internal support in a timely manner, thank you for your understanding) It's glad to know that eventually there is an answer to this question.
Totally, the issue is due to the offset of the image. Please check the code snip:

Because of the design in the DFU program, address offsets need to be modified in ITC:
Take led_blink as an example, please follow the steps below:
1. select link to ram in MCUXpressolink:

2. Modify the MEMORY as shown:

3. Add the crc and you're ready to go.
I have attached the bin file that is already available, the file with the suffix "_1" is the one that has been header added. Please test it.
Happy new year!
Best regards,
Gavin