bricked Thingy91 unable to put DFU mode nrf9160

Hi Øyvind,

my thingy91 is ver. 1.6.0 

the nrf5xxx i programmed it in MCUboot , with sw select on nrf52 and DFU mode with sw 4 The file i use was the file thingy91_nrf52_connectivity_bridge_2022-02-17_ec486dab.hex

for the nRF91xx i switched sw select to nrf91xxx and try DFU mode with sw 3 and powering. However no COM port is detected , so no download possible.

Hello, thanks for providing this information. 

mtpsilva said:

The file i use was the file thingy91_nrf52_connectivity_bridge_2022-02-17_ec486dab.hex

I assume that you are using img_fota_dfu_hex\thingy91_nrf52_connectivity_bridge_2022-02-17_ec486dab.hex

This should be enough to put Thingy:91 nRF9160 into MCUBoot mode, holding SW3 while powering the device on. The device will show in Programmer app as Nordic Thingy:91. And you should now be able to progra e.g. img_fota_dfu_hex\thingy91_asset_tracker_v2_ltem_2022-02-17_ec486dab.hex

Kind regards,
Øyvind

Hello, thanks for providing this information. 

mtpsilva said:

The file i use was the file thingy91_nrf52_connectivity_bridge_2022-02-17_ec486dab.hex

I assume that you are using img_fota_dfu_hex\thingy91_nrf52_connectivity_bridge_2022-02-17_ec486dab.hex

This should be enough to put Thingy:91 nRF9160 into MCUBoot mode, holding SW3 while powering the device on. The device will show in Programmer app as Nordic Thingy:91. And you should now be able to progra e.g. img_fota_dfu_hex\thingy91_asset_tracker_v2_ltem_2022-02-17_ec486dab.hex

Kind regards,
Øyvind