Thingy:91 - alternative operator SIM

[guyd]

Hello,

I tried using the Thingy:91 out-of-the-box, but didn't succeed, using a SIM (LTE-M/NB-IoT) of a local operator. I suppose this is possible?

Thanks.

Guy

[Heidi-Irene Harvey Sollie]

Hi!

Using a local operator is possible, as long as the SIM card supports LTE-M or NB-IoT. It's also necessary to flash the correct firmware (the Thingy:91 comes ready with firmware that only supports LTE-M). I have attached all the firmware binaries (you can also find them here). 

What did you try doing, that you didn't succeed in? 

thingy91fwv022 (2).zip

Best regards,

Heidi

[guyd]

Hi,

Thanks.

I just tried the "out-of-the-box" experience, but instead of using the iBasis eSIM using a SIM from a local operator. Normally I have LTE-M coverage at my location. With the iBasis eSIM it works.

I'll try with the firmware you sent.

Thanks.

Best regards,

Guy

[guyd]

Hi Heidi,

With the NB-IoT firmware binary I now can successfully connect. Thanks.

Flashing this firmware also erased the Asset Tracker app.
What do I need to have the asset tracker application run, with NB-IoT, on the Thingy:91?

Or should I use the same procedure as with my nRF9160 DK https://devzone.nordicsemi.com/nordic/cellular-iot-guides/b/getting-started-cellular/posts/getting-started-with-nrf9160-dk, compiling in Segger Studio and flashing the application firmware to the thingy:91 (the same way as I did for updating the modem firmware and NB-IoT firmware) using the 10 pin JTAG cable?

Best regards,

Guy

[Heidi-Irene Harvey Sollie]

Yes, you can use the same procedure as with the DK, just make sure to build with the nrf9160_pca20035ns board, not pca10090. You can also found already built firmware binaries on the Thingy:91 page, and use the Programmer application in nRF Connect to flash them to your device.

[guyd]

That's what I already tried: flashing "thingy91_nbiot_legacy_pco_v0.2.2.hex" to the Thingy:91. However, when using the nrfcloud I  don't see any measurements! Please see attached screenshot.

Thanks.

[Heidi-Irene Harvey Sollie]

Okay, I understand. It looks like a few customers are currently having this problem and we are working on a fix. Hopefully I will have a solution for you on monday.

Best regards,

Heidi