No response to programming a NRF91 Thingy

RE: No response to programming a NRF91 Thingy

Heidi — Thu, 19 Aug 2021 12:05:44 GMT

The FW running on the nRF52840 that the Thingy:91 comes shipped with had a bug that gave issues performing DFU over USB on the nRF9160 SiP with specific versions and operating systems.

RE: No response to programming a NRF91 Thingy

George Redpath — Thu, 19 Aug 2021 08:22:51 GMT

Thanks reprogramming the 52840 SoC seems to have worked, any idea why this is necessary?

RE: No response to programming a NRF91 Thingy

Heidi — Thu, 19 Aug 2021 07:41:31 GMT

Hi!

Have you updated the FW of the MCU's on the board via a debugger? I suggest updating the FW on the nRF52840 SoC first, then updating the app and modem FW on the nRF9160 SiP.

Then try to program it over USB.

RE: No response to programming a NRF91 Thingy

George Redpath — Wed, 18 Aug 2021 16:48:22 GMT

Some further things. Using SES studio, I can build and download an application. using the nrf programming APP, I can se that the memory has programmed. If I try to update the modem firmware, I see it program 32 blocks, and it claims to verify, but when I read it back it just says 1 non zero block, but doesn't show green (or orange) programmed blocks on the screen. And DFU programming still doesn't work. If I do the exact same steps with my nrf9160DK, it connects to the cloud (I change the application to build for the ns boards of each). The issue wseems that I cannot program the modem firmware. I have tried erase all, and I have checked that I using the modem firmware for thingy, but I assume it is the same modem firmware for both boards.

Thanks

George

RE: No response to programming a NRF91 Thingy

George Redpath — Wed, 18 Aug 2021 14:31:37 GMT

I have attached a screenshot of what happens when I try to program

I have powered the unit up with SW3 pressed, then I released SW3 before programming