I want to update firemare to XIAO nRF52840 sense via BLE, is it possible to achieve? If that, any guide or code example that I can follow and try? Thanks~
Hi there,
Yes,Yes indeed…
It’s called DFU via OTA The device firmware update , over the Air.
There are many examples of DFU over BLE , the Nordic DFU has mobile app. Look to those tutorials.
HTH
GL 
PJ 