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diff --git a/thirdparty/nRF5_SDK_15.0.0_a53641a/components/libraries/bootloader/nrf_bootloader_fw_activation.h b/thirdparty/nRF5_SDK_15.0.0_a53641a/components/libraries/bootloader/nrf_bootloader_fw_activation.h
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--- /dev/null
+++ b/thirdparty/nRF5_SDK_15.0.0_a53641a/components/libraries/bootloader/nrf_bootloader_fw_activation.h
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+/**
+ * Copyright (c) 2018 - 2018, Nordic Semiconductor ASA
+ * 
+ * All rights reserved.
+ * 
+ * Redistribution and use in source and binary forms, with or without modification,
+ * are permitted provided that the following conditions are met:
+ * 
+ * 1. Redistributions of source code must retain the above copyright notice, this
+ *    list of conditions and the following disclaimer.
+ * 
+ * 2. Redistributions in binary form, except as embedded into a Nordic
+ *    Semiconductor ASA integrated circuit in a product or a software update for
+ *    such product, must reproduce the above copyright notice, this list of
+ *    conditions and the following disclaimer in the documentation and/or other
+ *    materials provided with the distribution.
+ * 
+ * 3. Neither the name of Nordic Semiconductor ASA nor the names of its
+ *    contributors may be used to endorse or promote products derived from this
+ *    software without specific prior written permission.
+ * 
+ * 4. This software, with or without modification, must only be used with a
+ *    Nordic Semiconductor ASA integrated circuit.
+ * 
+ * 5. Any software provided in binary form under this license must not be reverse
+ *    engineered, decompiled, modified and/or disassembled.
+ * 
+ * THIS SOFTWARE IS PROVIDED BY NORDIC SEMICONDUCTOR ASA "AS IS" AND ANY EXPRESS
+ * OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+ * OF MERCHANTABILITY, NONINFRINGEMENT, AND FITNESS FOR A PARTICULAR PURPOSE ARE
+ * DISCLAIMED. IN NO EVENT SHALL NORDIC SEMICONDUCTOR ASA OR CONTRIBUTORS BE
+ * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE
+ * GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
+ * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ * 
+ */
+/**@file
+ *
+ * @defgroup nrf_bootloader_fw_activation Firmware activation
+ * @{
+ * @ingroup  nrf_bootloader
+ */
+
+#ifndef NRF_BOOTLOADER_FW_ACTIVATION_H__
+#define NRF_BOOTLOADER_FW_ACTIVATION_H__
+
+#include <stdint.h>
+#include <stdbool.h>
+
+#ifdef __cplusplus
+extern "C"
+{
+#endif
+
+typedef enum
+{
+    ACTIVATION_NONE,                             //!< No new update was found.
+    ACTIVATION_SUCCESS,                          //!< Update was successfully activated.
+    ACTIVATION_SUCCESS_EXPECT_ADDITIONAL_UPDATE, //!< Update was successfully activated, but there might be additional update(s) to be transferred.
+    ACTIVATION_ERROR,                            //!< Activation of an update failed.
+} nrf_bootloader_fw_activation_result_t;
+
+/** @brief Function for activating a firmware received during DFU.
+ *
+ * @details     This function initiates or continues the DFU copy-back
+ *              routines. These routines are fail-safe operations to activate
+ *              either a new SoftDevice, bootloader, combination of SoftDevice and
+ *              bootloader, or a new application.
+ *
+ * @details     This function relies on accessing MBR commands through supervisor calls.
+ *              It does not rely on the SoftDevice for flash operations.
+ *
+ * @note        When updating the bootloader or both bootloader and SoftDevice in combination,
+ *              this function does not return, but rather initiates a reboot to activate
+ *              the new bootloader.
+ *
+ * @retval  ACTIVATION_NONE                              If no update was found.
+ * @retval  ACTIVATION_SUCCESS                           If the firmware update was successfully activated.
+ * @retval  ACTIVATION_SUCCESS_EXPECT_ADDITIONAL_UPDATE  If the firmware update was successfully activated,
+ *                                                       but there are likely more updates to be transferred.
+ * @retval  ACTIVATION_ERROR                             If the firmware update could not be activated.
+ */
+nrf_bootloader_fw_activation_result_t nrf_bootloader_fw_activate(void);
+
+
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif // NRF_BOOTLOADER_FW_ACTIVATION_H__
+
+/** @} */