RE: nrf52840 dfu fail

john.liu — Fri, 03 Dec 2021 03:05:30 GMT

I can dfu afer updating nRF.Connect.4.24.3.apk. thank you very much.

RE: nrf52840 dfu fail

Hung Bui — Thu, 02 Dec 2021 11:40:58 GMT

Hi John,

From what I can see in the screenshot, the DFU target reported a CRC about the image received but it doesn't match with what the app on the phone sent. So it's pretty strange.

Did this happen all the time when you test with the same image ?
Could you try to do a DFU update with an example application as the image, for example ble_app_hrs ?

I have created a guide here that you may want to follow.

If testing a fresh example showing the same result, please send us the files that you use (sd, bl, app, setting, not merged) so that we can test here.