nrf52832 bootloader upgrade issue

[zzzZ]

The chip we use is nrf52832 and the SDK is nrf5_ SDK_ 15.3.0_ 59ac345,
Can we use nrf Toolbox (version: 2.7.2) to upgrade bootloader?

1. How to make bootloader upgrade package? Is there any SOP for bootloader upgrade

2. Does the application or bootloader need to be changed in the code

[Vidar Berg]

Hello,

Yes, you should be able to upgrade the bootloader. Are you seeing any errors?

1. You can generate a bootloader upgrade package with nrfutil similiar do how you would to it for other type of updates. The difference is that you must provide the --bootloader and --bootloader-version argument:

nrfutil pkg generate --hw-version 52 --app-boot-validation VALIDATE_GENERATED_CRC ^
--bootloader-version VERSION ^
--bootloader BOOTLOADER.hex ^
--sd-req 0xB7 ^
--key-file PRIVATE.pem dfu_bootloader.zip

2. The new bootloader image will not be swapped with the existing bootloader if they are 100 % identical. So the new bootloader must have some changes to get updated. And the bootloader can usually be updated separately without requiring an update of the application.

[zzzZ]

Hello:

OK,Got it.and also we want to know how to make BL + SD + APP package?

Tks!

[Vidar Berg]

Hello,

You can create a complete SD+BL+APP DFU package by adding the nrfutil arguments shown in the example snippet below. You may also run "nrfutil pkg generate --help" to get a help description for all of the command options.

nrfutil pkg generate --hw-version 52 --app-boot-validation VALIDATE_GENERATED_CRC ^
--bootloader-version VERSION ^
--bootloader BOOTLOADER.hex ^
--softdevice SOFTDEVICE.hex ^
--application APPLICATION.hex ^
--application-version-string "1.0.0" ^
--sd-req <insert SD FWID required for the SD+BL part of the update> ^
--sd-id  <insert the new SD FWID required for the application update> ^
--key-file PRIVATE.pem dfu_complete.zip