How to restore the device?

[avchizhov]

I have the nRF Hw v1, and it seems like I did something wrong with a Fw:

nRF is recognizable by a computer as the COM3/4/5 device:

And it is accessible with the nRF Programmer:

The nRF Serial Terminal connects to the nRF, but, the nRF does not respond to any AT command:

There is no “OK” reply, nor “Error”.

Another nRF works fine for me.

It looks like the Fw Application is loaded on the nRF and it is booted properly, while the modem does not respond.

Is there any Fw for the modem?

I saw some Segger software tool, and it offers to restore some image from time to time. Could it be connected to this problem?

[Didrik Rokhaug]

Hi,

You can find pre-compiled images for the nRF9160 DK here: https://www.nordicsemi.com/Products/Development-hardware/nRF9160-DK/Download#infotabs

Best regards,

Didrik

[avchizhov]

Didrik, greetings.

Please, tell us: how to use these pre-complied images?

Are all of them suitable for the Hw v1?

As is visible from the screenshots above, the device is accessible with the Programmer, when it absolutely does not respond with the Serial Terminal.

Br., Toni.

[avchizhov]

We have tried with the latest Fw:

nrf9160dk_mfw-1.3.7_sdk-2.8.0 [Latest Version]

and with the latest Asset Tracker v1:

2021-12-15_cfedfdfa (v1.3.1)

The both do not work for us.

Br., Toni.

[avchizhov]

Greetings to everybody.

I have, occassionally, found, that the device (Hw v1) reports something to the Serial Terminal app (v1.4.3):

---

*** Booting Zephyr OS build v2.7.0-ncs1 ***
[00:02:34.510,131] <err> at_cmd: Failed to open AT socket (err:-117)
[00:02:34.517,211] <wrn> at_notif: Already initialized. Nothing to do
[00:02:34.524,505] <inf> asset_tracker: Asset tracker started
[00:02:34.530,670] <inf> watchdog: Watchdog timeout installed. Timeout: 60000
[00:02:34.538,269] <inf> watchdog: Watchdog started
[00:02:34.544,281] <err> nrf_cloud_client_id: Failed to obtain IMEI, error: -1
[00:02:34.552,154] <err> nrf_cloud_transport: Could not obtain configured client ID, error: -1
[00:02:34.561,523] <err> asset_tracker: Cloud backend could not be initialized, error: -1
[00:02:34.570,465] <err> asset_tracker: LTE link disconnect
[00:02:34.576,751] <err> asset_tracker: lte_lc_power_off failed: -14
*** Booting Zephyr OS build v2.7.0-ncs1 ***down modem
I: Starting bootloader
I: Primary image: magic=unset, swap_type=0x1, copy_done=0x3, image_ok=0x3
I: Secondary image: magic=unset, swap_type=0x1, copy_done=0x3, image_ok=0x3
I: Boot source: none
I: Swap type: none
I: Bootloader chainload address offset: 0x10000
*** Booting Zephyr OS build v2.7.0-ncs1 ***
Flash regions Domain Permissions
00 03 0x00000 0x20000 Secure rwxl
04 31 0x20000 0x100000 Non-Secure rwxl

Non-secure callable region 0 placed in flash region 3 with size 32.

SRAM region Domain Permissions
00 07 0x00000 0x10000 Secure rwxl
08 31 0x10000 0x40000 Non-Secure rwxl

Peripheral Domain Status
00 NRF_P0 Non-Secure OK
01 NRF_CLOCK Non-Secure OK
02 NRF_RTC0 Non-Secure OK
03 NRF_RTC1 Non-Secure OK
04 NRF_NVMC Non-Secure OK
05 NRF_UARTE1 Non-Secure OK
06 NRF_UARTE2 Secure SKIP
07 NRF_TWIM2 Non-Secure OK
08 NRF_SPIM3 Non-Secure OK
09 NRF_TIMER0 Non-Secure OK
10 NRF_TIMER1 Non-Secure OK
11 NRF_TIMER2 Non-Secure OK
12 NRF_SAADC Non-Secure OK
13 NRF_PWM0 Non-Secure OK
14 NRF_PWM1 Non-Secure OK
15 NRF_PWM2 Non-Secure OK
16 NRF_PWM3 Non-Secure OK
17 NRF_WDT Non-Secure OK
18 NRF_IPC Non-Secure OK
19 NRF_VMC Non-Secure OK
20 NRF_FPU Non-Secure OK
21 NRF_EGU0 Non-Secure OK
22 NRF_EGU1 Non-Secure OK
23 NRF_EGU2 Non-Secure OK
24 NRF_EGU3 Non-Secure OK
25 NRF_EGU4 Non-Secure OK
26 NRF_EGU5 Non-Secure OK
27 NRF_DPPIC Non-Secure OK
28 NRF_REGULATORS Non-Secure OK
29 NRF_PDM Non-Secure OK
30 NRF_I2S Non-Secure OK
31 NRF_GPIOTE1 Non-Secure OK

SPM: NS image at 0x20200
SPM: NS MSP at 0x200258d8
SPM: NS reset vector at 0x29df1
SPM: prepare to jump to Non-Secure image.
*** Booting Zephyr OS build v2.7.0-ncs1 ***
I: Starting bootloader
I: Primary image: magic=unset, swap_type=0x1, copy_done=0x3, image_ok=0x3
I: Secondary image: magic=unset, swap_type=0x1, copy_done=0x3, image_ok=0x3
I: Boot source: none
I: Swap type: none
I: Bootloader chainload address offset: 0x10000
*** Booting Zephyr OS build v2.7.0-ncs1 ***
Flash regions Domain Permissions
00 03 0x00000 0x20000 Secure rwxl
04 31 0x20000 0x100000 Non-Secure rwxl

Non-secure callable region 0 placed in flash region 3 with size 32.

SRAM region Domain Permissions
00 07 0x00000 0x10000 Secure rwxl
08 31 0x10000 0x40000 Non-Secure rwxl

Peripheral Domain Status
00 NRF_P0 Non-Secure OK
01 NRF_CLOCK Non-Secure OK
02 NRF_RTC0 Non-Secure OK
03 NRF_RTC1 Non-Secure OK
04 NRF_NVMC Non-Secure OK
05 NRF_UARTE1 Non-Secure OK
06 NRF_UARTE2 Secure SKIP
07 NRF_TWIM2 Non-Secure OK
08 NRF_SPIM3 Non-Secure OK
09 NRF_TIMER0 Non-Secure OK
10 NRF_TIMER1 Non-Secure OK
11 NRF_TIMER2 Non-Secure OK
12 NRF_SAADC Non-Secure OK
13 NRF_PWM0 Non-Secure OK
14 NRF_PWM1 Non-Secure OK
15 NRF_PWM2 Non-Secure OK
16 NRF_PWM3 Non-Secure OK
17 NRF_WDT Non-Secure OK
18 NRF_IPC Non-Secure OK
19 NRF_VMC Non-Secure OK
20 NRF_FPU Non-Secure OK
21 NRF_EGU0 Non-Secure OK
22 NRF_EGU1 Non-Secure OK
23 NRF_EGU2 Non-Secure OK
24 NRF_EGU3 Non-Secure OK
25 NRF_EGU4 Non-Secure OK
26 NRF_EGU5 Non-Secure OK
27 NRF_DPPIC Non-Secure OK
28 NRF_REGULATORS Non-Secure OK
29 NRF_PDM Non-Secure OK
30 NRF_I2S Non-Secure OK
31 NRF_GPIOTE1 Non-Secure OK

SPM: NS image at 0x20200
SPM: NS MSP at 0x200258d8
SPM: NS reset vector at 0x29df1
SPM: prepare to jump to Non-Secure image.
*** Booting Zephyr OS build v2.7.0-ncs1 ***
[00:02:34.510,070] <err> at_cmd: Failed to open AT socket (err:-117)
[00:02:34.517,150] <wrn> at_notif: Already initialized. Nothing to do
[00:02:34.524,475] <inf> asset_tracker: Asset tracker started
[00:02:34.530,639] <inf> watchdog: Watchdog timeout installed. Timeout: 60000
[00:02:34.538,238] <inf> watchdog: Watchdog started
[00:02:34.544,250] <err> nrf_cloud_client_id: Failed to obtain IMEI, error: -1
[00:02:34.552,154] <err> nrf_cloud_transport: Could not obtain configured client ID, error: -1
[00:02:34.561,523] <err> asset_tracker: Cloud backend could not be initialized, error: -1
[00:02:34.570,465] <err> asset_tracker: LTE link disconnect
[00:02:34.576,782] <err> asset_tracker: lte_lc_power_off failed: -14
*** Booting Zephyr OS build v2.7.0-ncs1 ***down modem
I: Starting bootloader
I: Primary image: magic=unset, swap_type=0x1, copy_done=0x3, image_ok=0x3
I: Secondary image: magic=unset, swap_type=0x1, copy_done=0x3, image_ok=0x3
I: Boot source: none
I: Swap type: none
I: Bootloader chainload address offset: 0x10000
*** Booting Zephyr OS build v2.7.0-ncs1 ***
Flash regions Domain Permissions
00 03 0x00000 0x20000 Secure rwxl
04 31 0x20000 0x100000 Non-Secure rwxl

Non-secure callable region 0 placed in flash region 3 with size 32.

SRAM region Domain Permissions
00 07 0x00000 0x10000 Secure rwxl
08 31 0x10000 0x40000 Non-Secure rwxl

Peripheral Domain Status
00 NRF_P0 Non-Secure OK
01 NRF_CLOCK Non-Secure OK
02 NRF_RTC0 Non-Secure OK
03 NRF_RTC1 Non-Secure OK
04 NRF_NVMC Non-Secure OK
05 NRF_UARTE1 Non-Secure OK
06 NRF_UARTE2 Secure SKIP
07 NRF_TWIM2 Non-Secure OK
08 NRF_SPIM3 Non-Secure OK
09 NRF_TIMER0 Non-Secure OK
10 NRF_TIMER1 Non-Secure OK
11 NRF_TIMER2 Non-Secure OK
12 NRF_SAADC Non-Secure OK
13 NRF_PWM0 Non-Secure OK
14 NRF_PWM1 Non-Secure OK
15 NRF_PWM2 Non-Secure OK
16 NRF_PWM3 Non-Secure OK
17 NRF_WDT Non-Secure OK
18 NRF_IPC Non-Secure OK
19 NRF_VMC Non-Secure OK
20 NRF_FPU Non-Secure OK
21 NRF_EGU0 Non-Secure OK
22 NRF_EGU1 Non-Secure OK
23 NRF_EGU2 Non-Secure OK
24 NRF_EGU3 Non-Secure OK
25 NRF_EGU4 Non-Secure OK
26 NRF_EGU5 Non-Secure OK
27 NRF_DPPIC Non-Secure OK
28 NRF_REGULATORS Non-Secure OK
29 NRF_PDM Non-Secure OK
30 NRF_I2S Non-Secure OK
31 NRF_GPIOTE1 Non-Secure OK

SPM: NS image at 0x20200
SPM: NS MSP at 0x200258d8
SPM: NS reset vector at 0x29df1
SPM: prepare to jump to Non-Secure image.
*** Booting Zephyr OS build v2.7.0-ncs1 ***
I: Starting bootloader
I: Primary image: magic=unset, swap_type=0x1, copy_done=0x3, image_ok=0x3
I: Secondary image: magic=unset, swap_type=0x1, copy_done=0x3, image_ok=0x3
I: Boot source: none
I: Swap type: none
I: Bootloader chainload address offset: 0x10000
*** Booting Zephyr OS build v2.7.0-ncs1 ***
Flash regions Domain Permissions
00 03 0x00000 0x20000 Secure rwxl
04 31 0x20000 0x100000 Non-Secure rwxl

Non-secure callable region 0 placed in flash region 3 with size 32.

SRAM region Domain Permissions
00 07 0x00000 0x10000 Secure rwxl
08 31 0x10000 0x40000 Non-Secure rwxl

Peripheral Domain Status
00 NRF_P0 Non-Secure OK
01 NRF_CLOCK Non-Secure OK
02 NRF_RTC0 Non-Secure OK
03 NRF_RTC1 Non-Secure OK
04 NRF_NVMC Non-Secure OK
05 NRF_UARTE1 Non-Secure OK
06 NRF_UARTE2 Secure SKIP
07 NRF_TWIM2 Non-Secure OK
08 NRF_SPIM3 Non-Secure OK
09 NRF_TIMER0 Non-Secure OK
10 NRF_TIMER1 Non-Secure OK
11 NRF_TIMER2 Non-Secure OK
12 NRF_SAADC Non-Secure OK
13 NRF_PWM0 Non-Secure OK
14 NRF_PWM1 Non-Secure OK
15 NRF_PWM2 Non-Secure OK
16 NRF_PWM3 Non-Secure OK
17 NRF_WDT Non-Secure OK
18 NRF_IPC Non-Secure OK
19 NRF_VMC Non-Secure OK
20 NRF_FPU Non-Secure OK
21 NRF_EGU0 Non-Secure OK
22 NRF_EGU1 Non-Secure OK
23 NRF_EGU2 Non-Secure OK
24 NRF_EGU3 Non-Secure OK
25 NRF_EGU4 Non-Secure OK
26 NRF_EGU5 Non-Secure OK
27 NRF_DPPIC Non-Secure OK
28 NRF_REGULATORS Non-Secure OK
29 NRF_PDM Non-Secure OK
30 NRF_I2S Non-Secure OK
31 NRF_GPIOTE1 Non-Secure OK

SPM: NS image at 0x20200
SPM: NS MSP at 0x200258d8
SPM: NS reset vector at 0x29df1
SPM: prepare to jump to Non-Secure image.
*** Booting Zephyr OS build v2.7.0-ncs1 ***
[00:02:34.510,070] <err> at_cmd: Failed to open AT socket (err:-117)
[00:02:34.517,150] <wrn> at_notif: Already initialized. Nothing to do
[00:02:34.524,444] <inf> asset_tracker: Asset tracker started
[00:02:34.530,639] <inf> watchdog: Watchdog timeout installed. Timeout: 60000
[00:02:34.538,208] <inf> watchdog: Watchdog started
[00:02:34.544,219] <err> nrf_cloud_client_id: Failed to obtain IMEI, error: -1
[00:02:34.552,124] <err> nrf_cloud_transport: Could not obtain configured client ID, error: -1
[00:02:34.561,492] <err> asset_tracker: Cloud backend could not be initialized, error: -1
[00:02:34.570,434] <err> asset_tracker: LTE link disconnect
[00:02:34.576,721] <err> asset_tracker: lte_lc_power_off failed: -14
*** Booting Zephyr OS build v2.7.0-ncs1 ***down modem
I: Starting bootloader
I: Primary image: magic=unset, swap_type=0x1, copy_done=0x3, image_ok=0x3
I: Secondary image: magic=unset, swap_type=0x1, copy_done=0x3, image_ok=0x3
I: Boot source: none
I: Swap type: none
I: Bootloader chainload address offset: 0x10000
*** Booting Zephyr OS build v2.7.0-ncs1 ***
Flash regions Domain Permissions
00 03 0x00000 0x20000 Secure rwxl
04 31 0x20000 0x100000 Non-Secure rwxl

Non-secure callable region 0 placed in flash region 3 with size 32.

SRAM region Domain Permissions
00 07 0x00000 0x10000 Secure rwxl
08 31 0x10000 0x40000 Non-Secure rwxl

Peripheral Domain Status
00 NRF_P0 Non-Secure OK
01 NRF_CLOCK Non-Secure OK
02 NRF_RTC0 Non-Secure OK
03 NRF_RTC1 Non-Secure OK
04 NRF_NVMC Non-Secure OK
05 NRF_UARTE1 Non-Secure OK
06 NRF_UARTE2 Secure SKIP
07 NRF_TWIM2 Non-Secure OK
08 NRF_SPIM3 Non-Secure OK
09 NRF_TIMER0 Non-Secure OK
10 NRF_TIMER1 Non-Secure OK
11 NRF_TIMER2 Non-Secure OK
12 NRF_SAADC Non-Secure OK
13 NRF_PWM0 Non-Secure OK
14 NRF_PWM1 Non-Secure OK
15 NRF_PWM2 Non-Secure OK
16 NRF_PWM3 Non-Secure OK
17 NRF_WDT Non-Secure OK
18 NRF_IPC Non-Secure OK
19 NRF_VMC Non-Secure OK
20 NRF_FPU Non-Secure OK
21 NRF_EGU0 Non-Secure OK
22 NRF_EGU1 Non-Secure OK
23 NRF_EGU2 Non-Secure OK
24 NRF_EGU3 Non-Secure OK
25 NRF_EGU4 Non-Secure OK
26 NRF_EGU5 Non-Secure OK
27 NRF_DPPIC Non-Secure OK
28 NRF_REGULATORS Non-Secure OK
29 NRF_PDM Non-Secure OK
30 NRF_I2S Non-Secure OK
31 NRF_GPIOTE1 Non-Secure OK

SPM: NS image at 0x20200
SPM: NS MSP at 0x200258d8
SPM: NS reset vector at 0x29df1
SPM: prepare to jump to Non-Secure image.
*** Booting Zephyr OS build v2.7.0-ncs1 ***
I: Starting bootloader
I: Primary image: magic=unset, swap_type=0x1, copy_done=0x3, image_ok=0x3
I: Secondary image: magic=unset, swap_type=0x1, copy_done=0x3, image_ok=0x3
I: Boot source: none
I: Swap type: none
I: Bootloader chainload address offset: 0x10000
*** Booting Zephyr OS build v2.7.0-ncs1 ***
Flash regions Domain Permissions
00 03 0x00000 0x20000 Secure rwxl
04 31 0x20000 0x100000 Non-Secure rwxl

Non-secure callable region 0 placed in flash region 3 with size 32.

SRAM region Domain Permissions
00 07 0x00000 0x10000 Secure rwxl
08 31 0x10000 0x40000 Non-Secure rwxl

Peripheral Domain Status
00 NRF_P0 Non-Secure OK
01 NRF_CLOCK Non-Secure OK
02 NRF_RTC0 Non-Secure OK
03 NRF_RTC1 Non-Secure OK
04 NRF_NVMC Non-Secure OK
05 NRF_UARTE1 Non-Secure OK
06 NRF_UARTE2 Secure SKIP
07 NRF_TWIM2 Non-Secure OK
08 NRF_SPIM3 Non-Secure OK
09 NRF_TIMER0 Non-Secure OK
10 NRF_TIMER1 Non-Secure OK
11 NRF_TIMER2 Non-Secure OK
12 NRF_SAADC Non-Secure OK
13 NRF_PWM0 Non-Secure OK
14 NRF_PWM1 Non-Secure OK
15 NRF_PWM2 Non-Secure OK
16 NRF_PWM3 Non-Secure OK
17 NRF_WDT Non-Secure OK
18 NRF_IPC Non-Secure OK
19 NRF_VMC Non-Secure OK
20 NRF_FPU Non-Secure OK
21 NRF_EGU0 Non-Secure OK
22 NRF_EGU1 Non-Secure OK
23 NRF_EGU2 Non-Secure OK
24 NRF_EGU3 Non-Secure OK
25 NRF_EGU4 Non-Secure OK
26 NRF_EGU5 Non-Secure OK
27 NRF_DPPIC Non-Secure OK
28 NRF_REGULATORS Non-Secure OK
29 NRF_PDM Non-Secure OK
30 NRF_I2S Non-Secure OK
31 NRF_GPIOTE1 Non-Secure OK

SPM: NS image at 0x20200
SPM: NS MSP at 0x200258d8
SPM: NS reset vector at 0x29df1
SPM: prepare to jump to Non-Secure image.
*** Booting Zephyr OS build v2.7.0-ncs1 ***
[00:02:34.510,009] <err> at_cmd: Failed to open AT socket (err:-117)
[00:02:34.517,089] <wrn> at_notif: Already initialized. Nothing to do
[00:02:34.524,414] <inf> asset_tracker: Asset tracker started
[00:02:34.530,578] <inf> watchdog: Watchdog timeout installed. Timeout: 60000
[00:02:34.538,177] <inf> watchdog: Watchdog started
[00:02:34.544,189] <err> nrf_cloud_client_id: Failed to obtain IMEI, error: -1
[00:02:34.552,093] <err> nrf_cloud_transport: Could not obtain configured client ID, error: -1
[00:02:34.561,462] <err> asset_tracker: Cloud backend could not be initialized, error: -1
[00:02:34.570,404] <err> asset_tracker: LTE link disconnect
[00:02:34.576,721] <err> asset_tracker: lte_lc_power_off failed: -14
*** Booting Zephyr OS build v2.7.0-ncs1 ***down modem
I: Starting bootloader
I: Primary image: magic=unset, swap_type=0x1, copy_done=0x3, image_ok=0x3
I: Secondary image: magic=unset, swap_type=0x1, copy_done=0x3, image_ok=0x3
I: Boot source: none
I: Swap type: none
I: Bootloader chainload address offset: 0x10000
*** Booting Zephyr OS build v2.7.0-ncs1 ***
Flash regions Domain Permissions
00 03 0x00000 0x20000 Secure rwxl
04 31 0x20000 0x100000 Non-Secure rwxl

Non-secure callable region 0 placed in flash region 3 with size 32.

SRAM region Domain Permissions
00 07 0x00000 0x10000 Secure rwxl
08 31 0x10000 0x40000 Non-Secure rwxl

Peripheral Domain Status
00 NRF_P0 Non-Secure OK
01 NRF_CLOCK Non-Secure OK
02 NRF_RTC0 Non-Secure OK
03 NRF_RTC1 Non-Secure OK
04 NRF_NVMC Non-Secure OK
05 NRF_UARTE1 Non-Secure OK
06 NRF_UARTE2 Secure SKIP
07 NRF_TWIM2 Non-Secure OK
08 NRF_SPIM3 Non-Secure OK
09 NRF_TIMER0 Non-Secure OK
10 NRF_TIMER1 Non-Secure OK
11 NRF_TIMER2 Non-Secure OK
12 NRF_SAADC Non-Secure OK
13 NRF_PWM0 Non-Secure OK
14 NRF_PWM1 Non-Secure OK
15 NRF_PWM2 Non-Secure OK
16 NRF_PWM3 Non-Secure OK
17 NRF_WDT Non-Secure OK
18 NRF_IPC Non-Secure OK
19 NRF_VMC Non-Secure OK
20 NRF_FPU Non-Secure OK
21 NRF_EGU0 Non-Secure OK
22 NRF_EGU1 Non-Secure OK
23 NRF_EGU2 Non-Secure OK
24 NRF_EGU3 Non-Secure OK
25 NRF_EGU4 Non-Secure OK
26 NRF_EGU5 Non-Secure OK
27 NRF_DPPIC Non-Secure OK
28 NRF_REGULATORS Non-Secure OK
29 NRF_PDM Non-Secure OK
30 NRF_I2S Non-Secure OK
31 NRF_GPIOTE1 Non-Secure OK

SPM: NS image at 0x20200
SPM: NS MSP at 0x200258d8
SPM: NS reset vector at 0x29df1
SPM: prepare to jump to Non-Secure image.

---

It seems, like it tries booting or loading something, that is called as Zephyr.

Br., Toni.

[Hieu]

Hello Toni,

avchizhov said:

We have tried with the latest Fw:

nrf9160dk_mfw-1.3.7_sdk-2.8.0 [Latest Version]

and with the latest Asset Tracker v1:

2021-12-15_cfedfdfa (v1.3.1)

The both do not work for us.

The MFW you tried has a sdk-2.8.0 suffix, indicating that it was built for nRF Connect SDK (NCS) v2.8.0. Meanwhile, your Asset Tracker app has a 2021 prefix, indicating that it was built in 2021, which is before NCS v2.8.0 is released.
What I mean is, those two files are likely not released and tested together.

I recommend using firmware from the same package release, such as 2024-03-13_af2b60d2.
After you recover your device to working condition, I recommend following our Quick Start guides to continue. See:
https://docs.nordicsemi.com/bundle/ug_nrf9160_dk/page/UG/nrf91_DK/intro.html

Best regards,

Hieu

[avchizhov]

Hieu, greetings.

Could you suggest us: which Fw do you recommend us to use for the restoring?

Br., Toni.