Which binary files should be used for updateing FW through UART?

[KIM DAE HYUN]

Dear Nordic.

We are developing using following platform.

SDK Version: 2.3.0

BoardType: Non-Secure ( with TFM)

We enabled UART& BLE DFU in prj.conf

Following files are generated after compiling project.

app_update.bin
app_update_encrypted.bin

net_core_app_update.bin
net_core_app_update_encrypted.bin

dfu_application.zip

Which files should be used for updating FW through BLE/UART?

[Vidar Berg]

Hello,

Our SDK build scripts don't generate encrypted update binaries (see Common output build files), so I'm not sure how those are generated. Normally, you want to use *_app_update.bin or dfu_application.zip for DFU, but those may not work if your bootloader expects the image to be encrypted. 

Best regards,

Vidar