Can bootloader in SDK V11 boot into SDK V12/13/14 application

[Roland]

From document seems bootloader in SDK v12/13/14 does not support HCI/UART transport yet. So have to use SDK V11 bootloader.

However the application is based on SDK V13/V14. So the question is can SDK V11 bootloader boot into SDK V12/13/14 application?

[Hung Bui]

infocenter.nordicsemi.com/.../sdk_app_serial_dfu_bootloader.html

[Hung Bui]

Hi Roland,

The text should be updated. In previous version of the SDK (v12, v13) the serial bootloader was in experimental state. On SDK v14, it's moved out to production, and I would assume it should be full functional.

The bootloader from SDK v12 is a newly built bootloader, which has no backward compatible with the one in SDK V11. We call the bootloader from SDK v12: "Secure DFU". And the one on SDK v11 and earlier "Legacy DFU".

The bootloader from SDK v12 is built with good modularization, the two can be combined into one project, but there isn't much point doing so, as most of our customer only use 1 of the 2 transportation.