What are the test images for single bank update?

[Jorge]

Hi all,

I want to know if the images inside the hci_dfu_send_hex folder are just precompiled hex files from the examples.

More specific I want to use the bootloader from SDK11 but it doesn't seem that the project example and this test images are the same.

From which project example this images are created? Or if there is any difference between the projects and the test images?

Thank you for the help

[Hung Bui]

Hi Jorge,

Which exactly image you asking about, we have several images in the hci_dfu_send_hex folder.

The image is generated by using nrfutil tool according to the documentation here.

The name already tell which image/project it has for example dfu_test_app_hrm_s130.zip mean it's the ble heart rate example app inside.

bootloader.zip

bootloader.hex

[Jorge]

Does the pre compiled ("dfu_test_bootloader_b_hci_s130.hex") image contains the init packet for the dfu?

Is this needed for doing the serial DFU? I was searching for some hints on other questions and found that this init packet could be the issue.