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nRF51 connected with J-Link\npio run --target=upload --environment=nrf51-stlink # nRF51 connected with ST-Link\npio run --target=upload --environment=nrf52-stlink # nRF52 connected with ST-Link\n```\n\n## Full erase\nIf you experience weird issues on nRF51, you may want to re-flash SoftDevice using commands below.\n```shell\n# Download and extract S110 8.0.0 SoftDevice somewhere.\n# https://www.nordicsemi.com/Products/Development-software/S110/Download?lang=en#infotabs\n\n# Go to directory with extracted S110, then erase and upload S110 to target\nnrfjprog_bin --eraseall\nnrfjprog_bin --program s110_nrf51_8.0.0_softdevice.hex\n```\n","funding_links":[],"categories":[],"sub_categories":[],"project_url":"https://awesome.ecosyste.ms/api/v1/projects/github.com%2Fb4ck5p4c3%2Fopenhaystack-zephyr","html_url":"https://awesome.ecosyste.ms/projects/github.com%2Fb4ck5p4c3%2Fopenhaystack-zephyr","lists_url":"https://awesome.ecosyste.ms/api/v1/projects/github.com%2Fb4ck5p4c3%2Fopenhaystack-zephyr/lists"}