RE: Thingy:91 not detected in nRF9160 mode

Achim Kraus — Sun, 20 Oct 2024 06:24:52 GMT

The Thingy:91 has two components:

- the communication bridge for USB / Bluetooth LE, the nRF52840

- the modem and app mcu, the nRF9160

I guess, you flashed the nRF9160 app to the nRF52840. With that, step 4 should be the fix.

Do you use just USB and McuBoot? And you used the small SW4 to enable the boot mode? That's the boot mode of the nRF52840.

If so, which of the of the images did you apply to the "DFU nRF52"?

img_fota_dfu_hex and thingy91_nrf52_connectivity_bridge_2024-03-13_af2b60d2.hex (or newer, but in the img_fota_dfu_hex)?

Once you applied that, then the Thingy:91 should be able to connect via USB again.

Then don't use SW4 (small) to enter the boot mode, use SW3 (large) to do so. with that, the nRF9160 will enter the boot mode and you will be able to apply your app to that.

RE: Thingy:91 not detected in nRF9160 mode

Priyanka — Sat, 19 Oct 2024 21:49:08 GMT

Hi,

Could you tell me which firmware you had flashed before the issue occured? Was it an nrf sample or your custom fw?

Regards,

Priyanka