# DFU Example using Nordic nRF52x

**URL:** https://discuss.blues.com/t/dfu-example-using-nordic-nrf52x/273
**Category:** Firmware
**Created:** [May 26, 2021, 4:36pm UTC](https://discuss.blues.com/t/dfu-example-using-nordic-nrf52x/273 "2021-05-26T16:36:05Z")
**Posts on this page:** 2
**Page:** 1

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### Author: ![ptbkt](https://sea2.discourse-cdn.com/flex020/user_avatar/discuss.blues.com/ptbkt/32/181_2.png) [@ptbkt](https://discuss.blues.com/u/ptbkt)
#### Post date: [May 26, 2021, 4:36pm UTC](https://discuss.blues.com/t/dfu-example-using-nordic-nrf52x/273/1 "2021-05-26T16:36:05Z")

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Hi all,

We’re keen to take advantage of the over-the-air firmware update capability (DFU), however we’re not developing on ESP32.

We are using the Nordic nRF52-840, and I wondered if anyone has been able to get this working? If so some pointers in the right direction would be much appreciated.

Best regards,  
Pete

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### Author: ![RobLauer](https://sea2.discourse-cdn.com/flex020/user_avatar/discuss.blues.com/roblauer/32/1567_2.png) [@RobLauer](https://discuss.blues.com/u/RobLauer)
#### Post date: [May 27, 2021, 5:58pm UTC](https://discuss.blues.com/t/dfu-example-using-nordic-nrf52x/273/2 "2021-05-27T17:58:59Z")

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Hi @ptbkt and welcome to the Blues Wireless community!

We don’t have a nRF52x-specific DFU guide right now, however, if you haven’t seen it yet I’d recommend reading through the generic [Host Firmware Update Requests](https://dev.blues.io/reference/notecard-walkthrough/host-firmware-update-requests/) doc.

Also, you can look at the [ESP32 DFU guide](https://dev.blues.io/build/notecard-guides/updating-esp32-host-firmware/) as a reference to see how the Notecard interactions work.

Thanks,  
Rob