Updating firmware via USB

[AdamAtWork]

Hi,

My Thingy 91 wouldn't connect so I tried to update the firmware. However, I seem to have a different hardware version to what is described on pages like https://devzone.nordicsemi.com/nordic/cellular-iot-guides/b/getting-started-cellular/posts/thingy91_2d00_fw_2d00_update_2d00_mcuboot in that my device doesn't have the smaller switch (it only has a large black one on the top left of the nRF9160). Currently I can't get the device to seem to boot at all despite trying a few different firmware versions and download types. I'm turning on the device while holding down the button and then trying to load the "thingy91_ltem_dfu_2019-11-29_d3130d77.hex" file via the nRF Connect Programmer app but I can't get the device to boot again after the firmware is downloaded.  Please let me know of any tips you could suggest. 

Thanks,

Adam

[Heidi]

Hi!

If you look on the white sticker on the PCB, under "PCA20035", which version of the Thingy:91 do you have? 

Best regards,

Heidi

[AdamAtWork]

Hi,

It says 0.7.2

Thanks,

Adam

[Heidi]

I see. And are you using an external debugger or wanting to program it via USB using MCUBoot?

[AdamAtWork]

I don't have a programmer so was wanting to do this via USB if possible. 

[Heidi]

Okay, the tutorial you linked to in your post explains how to do this.

You can't use the nRF Connect Programmer app, you will have to use a terminal and follow the steps in the guide.