Issue about nRF5340 Network core bootloader

[Jasonho]

My Current nRF Connect SDK version: 1.5.0

I am trying to follow this reference https://developer.nordicsemi.com/nRF_Connect_SDK/doc/1.5.0/nrf/samples/nrf5340/netboot/README.html to test the network core bootloader.

Instead of using samples/bluetooth/peripheral_uart, I use zephyr/samples/hello_world.

0181.prj.conf

This file is the prj.conf that I use. You can see that I also enable the CONFIG_SECURE_BOOT=y.

After I build, I try to flash net_core_app_moved_test_update.hex this hex file. The MCUBoot just ignore it and doesn't start the update in Network core.

However, if I do CONFIG_SECURE_BOOT=n.

It works fine.

I can see "Done updating network core" show on the uart console.

Please advise.

Thanks,

Jason

[Simon]

I was able to reproduce you issue with the zephyr/samples/hello_world sample. The following prj.conf worked:

CONFIG_BOOTLOADER_MCUBOOT=y
CONFIG_BT=y

The following code did not work:

CONFIG_BOOTLOADER_MCUBOOT=y
CONFIG_BT=y
CONFIG_SECURE_BOOT=y

I've asked internally and will get back to you.

Best regards,

Simon

[Simon]

Secure boot (b0) + mcuboot is not supported on anything else than nrf91 at the moment, or it should work, but there are no ways of loading over the update, so there is no point of using b0.

Best regards,

Simon

[Simon]

I was able to make NSIB + network updates work in another ticket. Check it out here: https://devzone.nordicsemi.com/support-private/support/286725#permalink=756619