Intermittent Disconnects When Flashing UF2 Firmware to Tenstar nRF52840 Pro Micro Boardhttps://devzone.nordicsemi.com/f/nordic-q-a/124215/intermittent-disconnects-when-flashing-uf2-firmware-to-tenstar-nrf52840-pro-micro-boardI am experiencing an issue with my Tenstar nRF52840 Pro Micro board, which utilizes the Adafruit UF2 bootloader. When attempting to flash new firmware by copying a .uf2 file to the device, the board intermittently disconnects before the transfer completesen-USTelligent Community 13Tue, 09 Sep 2025 13:44:00 GMTRE: Intermittent Disconnects When Flashing UF2 Firmware to Tenstar nRF52840 Pro Micro Boardhttps://devzone.nordicsemi.com/thread/548249?ContentTypeID=1Tue, 09 Sep 2025 13:44:00 GMT137ad170-7792-4731-bb38-c0d22fbe4515:24c372d8-abe2-4d03-8a5b-485c0002e58fsasith_ind<p>Ok I will thanks for the help</p><div style="clear:both;"></div>RE: Intermittent Disconnects When Flashing UF2 Firmware to Tenstar nRF52840 Pro Micro Boardhttps://devzone.nordicsemi.com/thread/548242?ContentTypeID=1Tue, 09 Sep 2025 13:23:03 GMT137ad170-7792-4731-bb38-c0d22fbe4515:579ee448-4ff5-479a-b364-2769ae405a56Hung Bui<p>Hi Sasith,&nbsp;</p> <p>I would suggest to try asking on Adafruit support as we at Nordic are not so familiar with the Adafruit ecosystem.&nbsp;</p> <p>Other members of devzone may be able to jump in to help though.&nbsp;</p><div style="clear:both;"></div>RE: Intermittent Disconnects When Flashing UF2 Firmware to Tenstar nRF52840 Pro Micro Boardhttps://devzone.nordicsemi.com/thread/548075?ContentTypeID=1Mon, 08 Sep 2025 13:38:30 GMT137ad170-7792-4731-bb38-c0d22fbe4515:fbade36b-2a95-4a7e-ac10-5914741d4037sasith_ind<p>1.&nbsp;Enter bootloader mode by&nbsp;grounding&nbsp;the RST pin twice</p><div style="clear:both;"></div>