RE: Trouble trying to upload firmware to a Thingy 91 via USB

XavierN — Mon, 30 Dec 2019 10:19:34 GMT

See: devzone.nordicsemi.com/.../nrf9160dk-unable-to-connect

RE: Trouble trying to upload firmware to a Thingy 91 via USB

XavierN — Fri, 20 Dec 2019 14:21:30 GMT

Any suggestions before the weekend starts? 🙂

Xavier

RE: Trouble trying to upload firmware to a Thingy 91 via USB

XavierN — Fri, 20 Dec 2019 10:21:29 GMT

Hello Øyvind,

I chose the merged.hex file this time but unfortunately I get the same message and as as soon as I push the "write" button the thingy boots normally.

Is there anything else I could check?

Xavier

RE: Trouble trying to upload firmware to a Thingy 91 via USB

Øyvind — Fri, 20 Dec 2019 09:42:52 GMT

Hello,

Note that next week is Christmas holiday for the Nordic support team, and you must expect some delay in your answers. Full support is back at the beginning of January.

I assume you are following the Update Application FW on nRF9160 using MCUboot? In nRF Connect - Programmer, what shows in the drop-down list?

[quote user=""]Is it the right choice to build for nrf9160_pca20035ns or should I build for nrf9160_pca20035?[/quote]

Yes, this is correct.

[quote user=""]How do I make sure the Thingy 91 is in MCUBoot mode?[/quote]

As you did correct:

Connect Nordic Thingy:91 to the PC using USB.
Put the Nordic Thingy:91 into application serial recovery mode by pushing the SW3 button while powering on.
1. The device will not blink any LED
Start nRF Connect Programmer.
1. Will show in Programmer app as PCA20035_<SN> with two COM ports.
Click Select device and select the appropriate device entry from the drop-down list in the nRF Connect Programmer as shown in the following figure

[quote user=""]The build produces several .hex files: merged, app_signed, etc.. I chose app_signed since it is the one that appears on the help screenshot, is this the right one?[/quote]

No, this is not correct, you should use the merged.hex as this includes SPM and application. I will report this as a bug.

[quote user=""]I am assuming that SW3 is the only visible button on the top of the device when the cover is removed, or is the SW3 button located on the under side and I need to remove the device from the case?[/quote]

You are correct! SW3 is the only visible button on top.

Let me know how it works with merged.hex.

Kind regards,
Øyvind