SDK12 REMOTE DFU INVALID CRC ERROR

[Murugan]

Dear Nordic Team,

Thanks for Support.

I am worked DFU service in SDK11 it was working fine. Now i am DFU service work with SDK12 using nrf51422 DK. Initially update the bootloader through nRF gostudio (secure_dfu_secure_dfu_ble_s130_pca10028_debug.hex). Then create the image file from given buttonless dfu example (examples\ble_peripheral\experimental_ble_app_buttonless_dfu\pca10028\s130\arm5_no_packs_build\nrf51422_xxac.hex) using below command.

used commands:D:\ nrfutil dfu genpkg .zip --application .hex --application-version 0xFFFFFFFF --dev-revision 0xFFFF --dev-type 0xFFFF --sd-req 0xFFFE

zip file was successfully created. Then I am try update firmware through air using my anroid mobile it always show the REMOTE DFU INVALID CRC ERROR.

[Vidar Berg]

Hi,

The secure bootloader included in SDK 12 requires the DFU package to be signed with a private key using nrfutil version > 1.5. Please refer the the SDK documentation here for details on how to create the DFU package. Also, note that the "wildcard" option for softdevice version is no longer accepted.