OTA DFU from SDK11

[Nhuan]

Hello everyone,

Is there any way to update OTA-DFU from Firmware SDK11 to SDK16?

Thank you.

[Edvin]

Are you able to update anything using the dual bootloader from SDK11? Have you tried updating the application over DFU? Does that work?

If yes, how do you generate the bootloader packet compared to how you generate the application? Can you show me the commands that you used?

[Nhuan]

I'm updating an example application in SDK11 from my product (modified dual_bootloader SDK11).

The DFU process ran: 

but the new application did not perform. These are pictures before/after DFU:

The command I used nrfutil 0.5.2:

nrfutil dfu genpkg --application-version 0x41540003 --dev-type 0x4154 --dev-revision 0x0002 --application ble_app_hrs_s132_pca10040.hex hrs_sdk11.zip

[Edvin]

Ok, so you can't use the bootloader for anything, then. Is that right? Is the new application also from SDK11, and does it use the same softdevice as the old application?

[Nhuan]

That right, Edvin.

The new application is from SDK11, and uses the same softdevice.

[Edvin]

Ok, is anything in the bootloader project changed from the default bootloader in SDK11? If so, what?

Are you able to perform a DFU if you build a bootloader that is unmodified from the SDK, and generate an image from the unmodified SDK?

Best regards,

Edvin