can I update bootlader over the air

[makouda]

I'm using nrf51822, sd 10 and bootlader from sdk10. I can perform DFU to my application by loading the zip file with nRF master control.

Now I performed some customizations on the bootloader. I'm looking for a way to update the bootlader itself over the air because the product is already in the market.

with nRF master control, I created the zip file for the bootlader, I selected bootlader in the specify Upload Mode Mask then I loader the bootlader but it's the application which is flashed !!!!

here the application hex and the bootloader hex and the bootloader zip file. I'm using sdk10, SD 8.0

any help please.

[bjorn-spockeli]

You have to specify that the firmware image is a bootloader image by using the --bootloader option when creating the image using nrfutil.exe, i.e.

nrfutil dfu genpkg <name of zip file>.zip --bootloader <name of bootloader>.hex --application-version 0xFFFFFFFF --dev-revision 0xFFFF --dev-type 0xFFFF --sd-req 0xFFFE

-Bjørn

[makouda]

I did as you said, but each time it tried to load the bootlader "Starting DFU" on nrf master control, it disconnect. this is not happening with the app !!!

[bjorn-spockeli]

Could you share the firmware image and the hex file? You're using the S110 v8.0.0 and SDK v10.0.0 right?

[makouda]

I added the application hex and the bootloader hex. I'm using sdk10. sd8

[bjorn-spockeli]

Please upload the zip-file as well.