Getting started with Nordic's Secure DFU bootloader, a step by step guide

RE: Getting started with Nordic's Secure DFU bootloader, a step by step guide

user90259 — Tue, 06 Jul 2021 02:52:37 GMT

Hi nordic,

I want dfu the BL only, how should I pack file?

Thanks and best regards!

John

RE: Getting started with Nordic's Secure DFU bootloader, a step by step guide

user80315 — Tue, 09 Feb 2021 22:38:49 GMT

In B3, it says "Click Build" to build the bootloader. Is it in Keil? Since I'm not using Keil, what other ways can I use to build the bootloader?

RE: Getting started with Nordic's Secure DFU bootloader, a step by step guide

user89527 — Thu, 13 Aug 2020 10:38:30 GMT

Hello [mention:2fe6abe5b13f4277ad0faf47f6be318e:e9ed411860ed4f2ba0265705b8793d05], I am dealing with this exact same issue. When I get the Buttonless_DFU app running, it advertises correctly as Nordic_Buttonless, but when I connect with the nRF Connect Mobile app, there is no DFU option. Did you resolve this?

RE: Getting started with Nordic's Secure DFU bootloader, a step by step guide

user82485 — Fri, 22 May 2020 13:17:17 GMT

Well, everything works, except that the device needs to be power cycled in order to activate the application, after the application firmware is successfully updated through DFU. I am using secure bootloader under dfu folder and button_less_dfu example under ble_peripheral folder. I created a support case, but it was suggested to come to this link.

RE: Getting started with Nordic's Secure DFU bootloader, a step by step guide

user83493 — Mon, 02 Mar 2020 19:25:53 GMT

I am using SDK 15.3.0 and need to create a single hex file to program the initial batch of our nRF52840 based HW.
Currently, I have built the bootloader project (open not secure for now) and have a bootloader.hex file.

1. As a first step I created the bootloader settings file by:

nrfutil settings generate --family NRF52840 --application app_pca10056_s140.hex --application-version 0 --bootloader-version 0 --bl-settings-version 2 setting.hex

2. Merged bootloader hex file with setting (Apparently mergehex has a limit on number of input files to merge)

mergehex -m bootloader.hex setting.hex -o final-boot.hex

3. Merged the APP + SD + BL

mergehex -m app_pca10056_s140.hex s140_nrf52_6.1.1_softdevice.hex final-boot.hex -o firstArticle.hex

4. When I use nrfjprog to erasend program firstArticle.hex, nothing happens and the system is completely dead:

nrfjprog --family nRF52 --eraseall
nrfjprog --family nRF52 --program firstArticle.hex

However, If I go back to SEGGER and launch debugger for the bootloader (the one I used hex file for the above steps), the system boots and all is happy.

Can someone point me to what I am doing wrong? For now I am not using secure boot.

RE: Getting started with Nordic's Secure DFU bootloader, a step by step guide

user87960 — Thu, 20 Feb 2020 09:43:39 GMT

I tried the SDK 16.0 with SD132_7.0.1 and only the debug version of the DFU example worked on nRF52DK. What could be the difference between these two versions? We want to reduce the memory footprint, and the debug version is quite heavy.

RE: Getting started with Nordic's Secure DFU bootloader, a step by step guide

user87442 — Wed, 19 Feb 2020 16:01:26 GMT

I tried to update SD + APP at the same time but it only uploads the SD. I create the zip file like this nrfutil pkg generate --hw-version 52 --application-version 1 --application app.hex --sd-req 0xC1 --sd-id 0xCA --softdevice s140_nrf52_7.0.1_softdevice.hex --key-file private.key app_dfu_package_softdevice.zip

RE: Getting started with Nordic's Secure DFU bootloader, a step by step guide

user85646 — Tue, 03 Dec 2019 11:44:37 GMT

Hi,

I am using UART DFU Master code for reference.

Can you please explain uart_send_init_packet() and uart_send_application_image() shortly. or please provide documentation for the same.

RE: Getting started with Nordic's Secure DFU bootloader, a step by step guide

user76096 — Tue, 19 Nov 2019 10:15:59 GMT

Hi,

you wrote :

"What you need to prepare before we start:

6. A phone with BLE or a PC with an extra nRF5x DK or Dongle.

D3. Use nRFConnect/nRFToolbox app either on the phone or on PC to connect and do an OTA DFU.

Currently we don't have an official DFU Master code running on embedded chip (for example updating an nRF52 from another nRF52 via BLE."

If I am using the Buttonless DFU from PC. how my device should be connected to PC in order to do an OTA Buttonless DFU?

can I use BLE USB Dongle connected to PC for OTA Buttonless DFU ?

RE: Getting started with Nordic's Secure DFU bootloader, a step by step guide

user83623 — Tue, 08 Oct 2019 09:59:28 GMT

hello,in dfu trag, i can update but after update, in new app there is no dfu option for me, can you help me??

I use app nRFToolbox from Nordic.

RE: Getting started with Nordic's Secure DFU bootloader, a step by step guide

user81455 — Thu, 15 Aug 2019 06:31:02 GMT

Hi, I don't understand the step D3. Can I have more explanations please.

RE: Getting started with Nordic's Secure DFU bootloader, a step by step guide

user75965 — Thu, 16 May 2019 06:44:26 GMT

I unable to find the softdevice version in nRFGO studio, also I not found softdevice.

--sd-req: In my case my application runs with Softdevice S132 v4.0.2. The code number for this softdevice version is 0x98. You can find the softdevice code number by typing nrfutil pkg generate --help . If it's not in the list just yet, you can find the code using nRFGo Studio, just open any board that contains the softdevice.

After erasing the board I want to flash softdevice and then .hex of application code.

RE: Getting started with Nordic's Secure DFU bootloader, a step by step guide

user75965 — Thu, 16 May 2019 05:47:54 GMT

For preparing .zip file I am following below step :

C1. Prepare the application hex file. Build your application and find the .hex file inside _build folder. Usually it's named nrf52832_xxaa.hex if you compile a SDK's example. Flash the application hex and verify it works normally without the bootloader (flash softdevice if needed).

But I not found the build folder please help me.

RE: Getting started with Nordic's Secure DFU bootloader, a step by step guide

user2182 — Sat, 27 Apr 2019 19:12:39 GMT

If you're on 15.3.0 it seems there were some changes and the bootloader will throw an error. It's light on documentation on the change and nrfgo studio can't handle it without intervention by using mergehex it seems. So only way to fix this is mergehex or commandline programming. See this link about the "DFU example not working" . The title is 100% correct, the dfu examples included in 15.3 do not work at all out of box because flashing softdevice and then flash bootloader causes it to say the bootloader is in the softdevice region (which is sort of true), but if you do it the other way around the softdevice erases the chip first, so there goes the bootloader. Hopefully they'll sort this out in a revision of nrfgo studio but suffice to say it's broken and you need a workaround of mergehex or commandline

RE: Getting started with Nordic's Secure DFU bootloader, a step by step guide

user79254 — Sat, 27 Apr 2019 13:56:09 GMT

hi we are trying to copy the code using arduino ide to nrf52832 but it is throwing errors like bootloader upgrade failed.