using nRF Connect update FW success but actually fail..

RE: using nRF Connect update FW success but actually fail..

Priyanka — Fri, 02 Dec 2022 07:19:00 GMT

Hi Joe,

Glad to hear that your problem is fixed. Is it possible to explain a bit more on how the problem was fixed? If so that would be great for future seekers too. :) Also, kindly close the case in case of no further queries.

-Priyanka

RE: using nRF Connect update FW success but actually fail..

JoeYeh — Thu, 01 Dec 2022 20:59:33 GMT

Hi, Priyanka:

I found the problem and fixed it.

I added an extra program so that the bootloader doesn't do what it's supposed to do at boot.

RE: using nRF Connect update FW success but actually fail..

Priyanka — Tue, 29 Nov 2022 09:29:46 GMT

Hi Joe,

The reason why you have to perform DFU twice is because of memory issue. This is when using the NordicDFU. S in nRF5 SDK the firmware is composed of 3 parts:

SoftDevice (stack)
Bootloader (does DFU)
App

Since the App and Bootlaoder are using the SoftDevice, the Softdevice version on the device needs to be correct, without which the device will be bricked.

So, the Softdevice and Bootloader can be updated together because in case the Softdevice has updates, then the bootloader will not work with the new Softdevice. So they are updated together. It would be great to update all 3 together, but there's no space on the device to store SoftDevice+BootLoader+App in a secondary bank (during DFU). Hence in case there is App update, it is done in the second time. So it is the second DFU update that does the App update because then the SoftDevice version will match.

-Priyanka

RE: using nRF Connect update FW success but actually fail..

JoeYeh — Tue, 29 Nov 2022 07:32:34 GMT

Hi, Priyanka
Why do I need to do DFU twice when the device has app code inside, but only once when the device only has SD+BL?
Is Mobile APP problem?
We have developed our own APP and must upload it twice to successfully replace the firmware!

RE: using nRF Connect update FW success but actually fail..

Priyanka — Mon, 28 Nov 2022 12:25:50 GMT

Hi,

They are on it. Also, we have a new version of nrf connect we're working on that requires iOS 16 - if you want to try it out, I just need your email to send you the beta test invite. Also, at the moment we suggest you to rely on nrf connect or nrf connect device manager for dfu. we're planning on removing dfu capability from nrf toolbox.

Regards,

Priyanka

RE: using nRF Connect update FW success but actually fail..

Priyanka — Fri, 25 Nov 2022 14:15:08 GMT

Hi Joe,

Thanks for the feedback. I have contacted experts regarding this and will get back to you by Tuesday.

Best Regards,

Priyanka