Nrf9160 Modem Unresponsive after FW Update

[RicFlair]

Hello there, 

Prior to updating to the latest modem firmware i was able to successfully get responses from the DK.

Running the Asset tracker app as well as AT Client. 

However after I update the firmware to the latest: 0.7.0-29 I am unable to get any responses. 

See screen shot below:

Also, I am getting no responses from the Modem LEDS. I can successfully flash to the target just no interfacing to the modem.

Are there additional steps that are needed?

Do I have to flash spm first before the application or possibly flash the bootloader and then the application?

All was working well previously. Also my DK is v: 0.8.2 and I see there is hardware 0.8.5

Was there a major HW change that couldve impacted my modems response?

Please advise.

Thanks.

[Hakon]

Hello, please git checkout the newest tag which is v0.4.0. Looks like you are using an older one.

[RicFlair]

Gave that a try, still did not work.

Now I don't get any responses even when rebooting the device.

Do you have any instructions on re-flashing the Controller MCU (nrf52) and then the Nrf91?

[Hakon]

Push the reset button, and see if you get any output in the terminal. If not, try flashing this file.

merged.hex

[RicFlair]

I think something is wrong with my board controller. I can get responses from the Terminal when I reset but nothing from the modem.

Should I first reflash the board controller and the nr91 with the file you provided?

Also, do I need to flash SPM first before any other application or is this step not needed anymore?

[Hakon]

RicFlair said:

Should I first reflash the board controller and the nr91 with the file you provided?

 Yes, try that.

 

RicFlair said:

Also, do I need to flash SPM first before any other application or is this step not needed anymore?

 No, the merged.hex file contains the SPM.