Sample project for upgradable mcuboot

[Ubaid_M]

Hi,

I need a sample project for upgradable mcuboot, I am to understand that to have mcuboot upgradable, I need to have 2 stage boot loader, wherein 1st stage bootloader is nRF secure immutable bootloader which upgrades the mcuboot.

1. Please suggest if it is feasible for stage-1 bootloader to upgrade mcuboot through BLE..?

2. Also, please point me to the documentation of how stage-1 bootloader updates stage-2 bootloader & any sample code for the same.

Kindly suggest.

Thanks,

Ubaid

[Sigurd Hellesvik]

Hi Ubaid

For SMP using Bluetooth Low Energy, see the SMP Server sample.

For general information on MCUBoot, see MCUboot documentation in the nRF Connect SDK and more specifically Using MCUboot in nRF Connect SDK.

For upgradadable MCUBoot, see our documentation on nRF Secure Immutable Bootloader and Adding an upgradable bootloader.

I recently made am (unofficial) sample to showcase upgradable MCUBoot using SMP. See Sample on how to use NSIB(b0) to update MCUBoot feat. SMP Server
The sample use SMP over UART.

With these resources, I beleive you should be able to achieve Upgradable MCUBoot over Bluetooth.
Let me know if you face any issues when trying this, and I will try to help.

Regards,
Sigurd Hellesvik