DFU update of Bootloader

[Chris]

I'm using the boot loader that comes with the beacon development kit and I want to change it so that when the application software is running it can restart the device in DFU mode.

I can happily write the firmware for this but IS IT POSSIBLE to update the boot loader over the air.. or do I need to flash it via the SWD connector.. (bit of a pain..)

I know the SD 7.0 has a lot of improved DFU capabilities and therefore probably don't need a boot loader but dox / examples still seem thin on the ground for that...

[Hung Bui]

Hi Chris,

The new S110 v7.0 alpha added a Master Boot Record block in the softdevice that allows softdevice update and bootloader update. However, it's pretty new and we found some issue on the alpha version for bootloader updating. A DFU example for application update, softdevice update and bootloader update will be included in the next release of the SDK which will be available in close future.

Regarding the beacon kit, it's running on the S110 v6.0 so bootloader update is not supported. You would need to reflash the new bootloader via SWD.

[Chris]

Yes.. that was the one I ended up using and I'm happily running a heavily modified beacon reference now on SD 7..