Firmware update for Thingy 91

[Andrew8691]

I cant seem to get the Thingy 91 into boot MCU mode, so that I can update it to the latest firmware.
No matter how many times I try turning the unit off and powering up with the larger press button held down, the firmware programming returns an error complaining that the unit is not in BootMCU mode.

Is there anything else I could try?

[Albrecht Markus Schellenberger]

Andrew8691 said:

Thanks Markus, I've tried it with two Thingy 91s . They are PCA20035 (2020:22 and 2020:23) - from the white labels.

Thanks, Andrew! Hardware revisions look good.

Andrew8691 said:

The version of firmware that I am trying to load into the Thingys is thingy91_fw_2021-06-28_7a076c22

 Which folder does the image come from? 

Andrew8691 said:

I've since tried the process using a Windows PC and got much further (than with the Mac) but still hit an error.

It seems like you have another problem with your toolchain, at least on your Windows. Have you installed the nRF Command Line Tools?

Regards,

Markus

[Andrew8691]

Thanks Markus,

I got the firmware from: https://www.nordicsemi.com/Products/Development-hardware/Nordic-Thingy-91/Download#infotabs

I hadn't yet installed the command line tools, but will now do that.

Regards,

Andrew.