No response to programming a NRF91 Thingy

[George Redpath]

I have both a NRF9160DK which I can program and, Zephyr, blinky Serial modem etc, all work on the DK and I also have a nrf91 Thingy.

The Thingy won't respond to programming over the USB, it just times out.

I can program it using a j-Link PRO, and it seems to program the modem and the Serial modem image file and I can satisfactorily read it back.

I then power cycle the nrf91 thingy and reconnect the LTE link monitor, but I get no response to AT_CFUN?

I am I missing something with this process?

Thanks in advance

George

[George Redpath]

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

[Heidi]

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.