https://devzone.nordicsemi.com/f/nordic-q-a/117963/flash-nrf52840-dongle-with-sweyntooth-firmwareHi, I was trying to flash the sweyntooth firmware to nRF52840 dongle using nRF connect for desktop. I was following the instruction on in this tutorial: . The hex file I used was provided in github https://github.com/Matheus-Garbelini/sweyntooth_bluetooth_low_energy_attacksen-USTelligent Community 13Mon, 13 Jan 2025 14:28:09 GMThttps://devzone.nordicsemi.com/thread/518179?ContentTypeID=1Mon, 13 Jan 2025 14:28:09 GMT137ad170-7792-4731-bb38-c0d22fbe4515:6a15726a-9f33-4eae-b392-8c0312861bc2Vidar Berg<p>Hi David,</p> <p>It looks to be s140 v6.1.1 based on the DFU distribution package they&nbsp;provided here:&nbsp;<a href="https://github.com/Matheus-Garbelini/sweyntooth_bluetooth_low_energy_attacks/blob/master/nRF52_driver_firmware.zip">https://github.com/Matheus-Garbelini/sweyntooth_bluetooth_low_energy_attacks/blob/master/nRF52_driver_firmware.zip</a>. The softdevice hex file can be downloaded at the product page here:&nbsp;<a href="https://www.nordicsemi.com/Products/Development-software/S140/Download">https://www.nordicsemi.com/Products/Development-software/S140/Download</a>&nbsp;</p> <p>FW ID for this release is 0x00B6</p> <p><img style="max-height:240px;max-width:320px;" src="https://devzone.nordicsemi.com/resized-image/__size/640x480/__key/communityserver-discussions-components-files/4/pastedimage1736778465697v1.png" alt=" " /></p> <p>Best regards,</p> <p>Vidar</p><div style="clear:both;"></div>