Update via UART without custom bootloader embedded

[Aurelien M]

Hello,

We have a lot of boards (more that 5000) witch embedded a nordic NRF51822 to scan beacons. 

the person who designed the card did not plan any bootloader on the NRF. we program only a sofdevice (s130) and an application before send the board.

The nordic communicate with a microcontroller using UART (just Rx and Tx Pin). 

We would like update the NRF via UART because we cannot come to each of our customers and the microcontroller can be updated Over the Air.

The application is based on the ble_app_usart example provided by Nordic

- Is there a solution to update the nordic?

- The OTA via application is it the easiest solution? 

My english is not very easy to read, sorry for this. 

Thanks,

Aurélien.

[awneil]

You need to have a bootloader of some sort to do a firmware update. 

The only other option is to use SWD.

[Aurelien M]

Thank you for your answer. 
There is no default bootloader on the nordic ? 

[Kenneth]

There is no bootloader by default no, we do have example implementation of various bootloaders that can support DFU, but unless you have customized it to fit your product and programmed it during production then it's not possible no.

Kenneth