Bootloader update does not work

[ToTo]

Hi , why I can't have an update of my bootloader ? Here is the script I use to generate the .zip file :

nrfutil dfu genpkg --bootloader Bootloader.hex Boot.zip

The Application update work with this script :

nrfutil dfu genpkg --application app.hex app.zip

Any idea ? SDK11 SD130 2.0.0

[Stian Røed Hafskjold]

So what is not working? Does the script fail? Does it fail during upload, or after you have uploaded? What are the symptoms when it's not working? And are you using the bootloader from SDK11, both before and after the update? Have you modified the bootloader in some way?

[ToTo]

My modifications are just having a blink LED. The update goes 100% but nothing changed. How I noticed that : I have two bootloader versions (that boths works, I have tested them) one with LED blinking one without..So when I update Bootloader with the LED blinking one , nothing changes, I have always the old Boot working !!! Yeah , I use bootloader from SDK11