Secure BLE DFU bootloader doubt!!

[Sridhar Jonnavittula]

Hi,

I have used examples\dfu\secure_bootloader\pca10056_ble application and successfully updated two applications(heart rate and health thermometer) over BLE. In order to do that upon testing first application , for updating second application I was forced to press button 4 with IF reset in order device jump to bootloader. For my end product this kind of mechanism may not be there right, then how can I update second package from mobile without pressing button 4 on my nRF52840 DK?

Thanks,

Sridhar

[Hung Bui]

Hi Sridhar, 

 

If you don't have a button to enter DFU, you would need to use buttonless solution. Have a look at Appendix 2 on this guide.