Combine bootloaders buttonless + usb + uart

[Stas]

We create general purpose device based on  nrf52840 chip and need to provide different ways of dfu: buttonless, usb, uart. Is there any examples, recommendations how to do it?

[Vidar Berg]

Hi, 

We don't have an example that combines all transports unfortunately. However, it is designed so that it should be easy to register more than one . Note that you may need to add some additional logic to decides what transport to use. E.g., disable BLE transport if DFU initiated through one of the serial interfaces that only work when the softdevice is disabled.