Nrf52 dfu ble

[sang0ku]

Hi, im trying to update the firmware of a nrf52 using dfu ble. For example, have a blinky example running and switch to a blinky2. Can anyone know if this is possible?

[Vidar Berg]

Yes, but first you need to enter Bootloader DFU mode. Since the blinky example doesn't have any ble functionality this has to be done with a physical button or similar. Button 4 is the default button for this on the 52 DK kit. Just hold this button while doing a system reset to enter DFU mode, and then you can start uploading the new FW.