Accidentally used 9V power supply. nRF9160 board wont flash anymore.

RE: Accidentally used 9V power supply. nRF9160 board wont flash anymore.

Øyvind — Fri, 19 Apr 2024 10:42:36 GMT

Ok, thanks for clarifying! I would recommend getting a new board in this case. Sorry for the inconvenience!

RE: Accidentally used 9V power supply. nRF9160 board wont flash anymore.

Thomas Skar — Fri, 19 Apr 2024 10:20:35 GMT

[quote userid="77062" url="~/f/nordic-q-a/110354/accidentally-used-9v-power-supply-nrf9160-board-wont-flash-anymore/479656"]You are referring to - "Can't read memory descriptors, ap-protection is enabled" ?[/quote]

Yes.

The application stops at "The AT host sample started" It does not initialize the modem libary. This is where the program stops in my own program aswell. And this worked before using the 9V power supply.

RE: Accidentally used 9V power supply. nRF9160 board wont flash anymore.

Øyvind — Fri, 19 Apr 2024 10:09:39 GMT

[quote user="Thomas Skar"]But it stops at "The AT host sample started". [/quote]

This application does not do more other than show AT commands. You should be able use the Serial Terminal or Cellular Monitor to get information in the application.

E.g

*** Booting nRF Connect SDK v3.5.99-ncs1 ***
The AT host sample started
Ready
> AT+CFUN=1
OK
> AT%XCONNSTAT=1
OK
> AT%XCONNSTAT?
%XCONNSTAT: 0,0,0,0,0,0
OK
> AT+CMEE=1
OK
> AT%XSIM=1
OK
> AT+CEREG=5
OK
> AT%MDMEV=1
+CME ERROR: 0
> AT%CESQ=1
OK
> AT+CGSN=1
+CGSN: "352656100376253"
OK
> AT+CGMM
nRF9160-SICA
OK
> AT+CEMODE?
+CEMODE: 2
OK
> AT+CMEE?
+CMEE: 1
OK
> AT+CNEC?
+CNEC: 0
OK
> AT+CGEREP?
+CGEREP: 0,0
OK
> AT+CIND=1,1,1
OK
> AT+COPS=3,2
OK
> AT+CGDCONT?
OK
> AT+CGACT?
OK
> AT+CESQ
+CESQ: 99,99,255,255,255,255
OK
> AT%XSIM?
%XSIM: 0
OK
> AT+CPIN?
+CME ERROR: 13
> AT+CIMI
+CME ERROR: 0
> AT+CNEC=24
OK
> AT+CEER
OK
> AT+CGEREP=1
OK
> AT%XPOFWARN=1,30
+CME ERROR: 0
> AT%XVBATLVL=1
OK
> AT+CGMI
Nordic Semiconductor ASA
OK
> AT+CGMR
mfw_nrf9160_1.2.3
OK
> AT+CGSN
352656100376253
OK
> AT%XMODEMUUID
%XMODEMUUID: 0191538f-d3a5-4fe9-8f54-ba7cad9460c0
OK
> AT%XDATAPRFL?
%XDATAPRFL: 2
OK
> AT+CEREG?
+CEREG: 5,4,"FFFE","FFFFFFFF",7,0,0,"00000000","00000000"
OK
> AT+CFUN?
+CFUN: 1
OK
> AT%CESQ=1
OK
> AT+CSCON=1
OK
> AT+CSCON?
+CSCON: 1,0
OK
> AT+CPAS
+CPAS: 0
OK
> AT+CEDRXRDP
+CEDRXRDP: 4,"1001","0000","0000"
OK
> AT%XTIME=1
OK
> AT%CONEVAL
+CME ERROR: 0
> AT%XCBAND=?
%XCBAND: (1,2,3,4,5,8,12,13,18,19,20,25,26,28,66)
OK
> AT%XCBAND
%XCBAND: 0
OK
> AT%HWVERSION
%HWVERSION: nRF9160 SICA B0A
OK
> AT%XMODEMTRACE=1,2
OK
> AT%XSYSTEMMODE?
%XSYSTEMMODE: 1,0,0,0
OK
> AT%XICCID
+CME ERROR: 0
> AT%XEMPR?
%XEMPR: 
OK
> AT+CGDCONT?
OK
> AT+COPS?
+COPS: 0
OK
> AT%XMONITOR
%XMONITOR: 4
OK
> AT+CPINR="SIM PIN"
+CEREG: 90
%XSIM: 0

[quote user="Thomas Skar"] And when reflashing the same memory error appear.[/quote]

You are referring to - "Can't read memory descriptors, ap-protection is enabled" ?

RE: Accidentally used 9V power supply. nRF9160 board wont flash anymore.

Thomas Skar — Fri, 19 Apr 2024 09:28:27 GMT

I have gone through the SDK and celluar fundamentals courses. I am able to flash the AT client program to the device. But it stops at "The AT host sample started". And when reflashing the same memory error appear.

RE: Accidentally used 9V power supply. nRF9160 board wont flash anymore.

Øyvind — Thu, 18 Apr 2024 17:14:45 GMT

First of all, just to verify, have you seen our Developer Academy? This goes through various levels of the nRF Connect SDK e.g. Cellular IoT Fundementals.

The nRF9160DK includes an onboard debugging/programming interface which allows you to program external devices such as the nRF9160 and nRF52840 on the Thingy:91 More information found here: https://docs.nordicsemi.com/bundle/ug_nrf91_dk/page/UG/nrf91_DK/hw_debug_out.html

[quote user="Thomas Skar"]But the issue still remains.[/quote]

The issue of programming the device?

Are you able to program e.g. AT Client from the Precompiled firmware package found on the nRF9160DK product page? Does the AT client allow you to send AT commands to the nRF9160 modem to e.g. turn on and off LTE?

RE: Accidentally used 9V power supply. nRF9160 board wont flash anymore.

Thomas Skar — Thu, 18 Apr 2024 13:52:56 GMT

I was able to update the firmware on the nRF9160 board. But the issue still remains.

I am not quite sure that i understand what you meant with the last reply. Is there a guide for this ?

RE: Accidentally used 9V power supply. nRF9160 board wont flash anymore.

Øyvind — Thu, 18 Apr 2024 13:25:24 GMT

Can you program the Thingy:91 using the nRF9160DK? This would at least mean that the programming device on the DK is OK.

If the nRF9160 on the Thingy:91 behaves the same as the DK, then this would mean that the DK is OK.

RE: Accidentally used 9V power supply. nRF9160 board wont flash anymore.

Thomas Skar — Thu, 18 Apr 2024 13:04:48 GMT

Can try and update the modem FW. We do have a thingy:91.

RE: Accidentally used 9V power supply. nRF9160 board wont flash anymore.

Øyvind — Thu, 18 Apr 2024 12:53:47 GMT

Are you able to upgrade the modem FW of the device? Do you have another board to test with as well?

RE: Accidentally used 9V power supply. nRF9160 board wont flash anymore.

Thomas Skar — Thu, 18 Apr 2024 12:27:07 GMT

It seems like blinky can be flashed many times after doing the recover/erase command. But when running the other code it stops at initializing the modem. After this it fails flashing the blinky program.It now also fail the recover/erase command. Unplugging the power cable for a couple of minutes and then running the recover/erase command the blinky program can now be flashed again.

RE: Accidentally used 9V power supply. nRF9160 board wont flash anymore.

Øyvind — Thu, 18 Apr 2024 12:14:22 GMT

How many times to see the issue when you try to program the device? Is there a difference between what samples you program?

Could you please test e.g. 10 times and see how many times it will fail to program blinky?

RE: Accidentally used 9V power supply. nRF9160 board wont flash anymore.

Thomas Skar — Thu, 18 Apr 2024 11:10:35 GMT

Yes. I have also noticed that it does recover sometimes. Like this time, and it lets me flash the blinky example to the board. Then when i try to flash my other code it goes back into memory protection. This code worked fine before connecting the 9V power supply.

devzone.nordicsemi.com/.../31273.log.log

RE: Accidentally used 9V power supply. nRF9160 board wont flash anymore.

Øyvind — Thu, 18 Apr 2024 10:57:24 GMT

Thank you! Yes, this looks more correct. This looks successful. Can you please perform the same for nrfjprog --recover -f NRF91 --log?

RE: Accidentally used 9V power supply. nRF9160 board wont flash anymore.

Thomas Skar — Thu, 18 Apr 2024 10:35:36 GMT

Sorry, the board was not connected when running the command.. Here is the new log.

devzone.nordicsemi.com/.../42618.log.log

RE: Accidentally used 9V power supply. nRF9160 board wont flash anymore.

Thomas Skar — Thu, 18 Apr 2024 10:30:29 GMT

Yes it was conected to the external supply pins. VDD IO is set to 1.8V and the SW0 is set to nRF91.

devzone.nordicsemi.com/.../3618.log.log

RE: Accidentally used 9V power supply. nRF9160 board wont flash anymore.

Øyvind — Thu, 18 Apr 2024 10:13:19 GMT

Hi Thomas,

Thanks for registering this quickly. Let us try to figure out what is going on.

[quote user=""]Accidentally used a 9V power supply. Board does not flash anymore.[/quote]

Was this connected to the External supply pins?

As discussed over the phone the VDD IO is set to 1,8V, what about the SW0? Is it set to nRF52 or nRF91?

Could you please run the following nrfjprog --eraseall -f NRF91 --log and then provide the log file here?

Kind regards,
Øyvind