nrf52833 enter bootloader/dfu mode over uart

RE: nrf52833 enter bootloader/dfu mode over uart

Vidar Berg — Tue, 14 Oct 2025 09:56:40 GMT

Hi,

Unfortunately, I do not know anything about the bootloader they use. Have they made the source code available?

Kind regards,

Vidar

RE: nrf52833 enter bootloader/dfu mode over uart

MatthijsB — Tue, 14 Oct 2025 09:52:19 GMT

Hi,

Thanks for your reply.

My bad, the used component is a NINA-B400, with the nrf52833 as chip inside. The integration manual was from ublox, along with the provided bootloader, which i assumed was from nrf (again, my bad sorry).

Kind regards,

Matthijs

RE: nrf52833 enter bootloader/dfu mode over uart

Vidar Berg — Tue, 14 Oct 2025 09:41:50 GMT

Hello,

Is the integration manual you referred to internal to your company or from a third party? Also, where does the "default bootloader hex" come from? The reason for asking is that our 52833's are shipped blank from our factory and don't have any default bootloader.

Thanks,

Vidar