RE: Updating Firmware via DFU or directly

tesc — Mon, 09 Mar 2020 14:15:58 GMT

Hi,

The DFU process, the DFU protocol and the BLE transport are all documented in our online documentation (Infocenter).

Implementation examples are available through github, in the form of iOS library, Android library, source code for nrfutil and DFU library, part of pc-ble-driver-js (which is used by nRF Connect for Desktop). All of those implementations uses a zip package generated by nrfutil, as the upgrade package.

[quote user=""]What would be even better is if there was documentation as to where to write the firmware update directly into flash and bypass the DFU.[/quote]

What do you mean by that, connecting a programmer to the board and reflash firmware manuallly? DFU, or Device Firmware Update, is the process of updating firmware through use of firmware already present on the device, as opposed to using a programmer to directly access flash through the debug interface of the device. E.g. DFU is suited for end customers, while direct programming is typically done in production and during development.

Regards,
Terje