diff --git a/components/tinyusb_dfu/additions/include/tusb_dfu_rt.h b/components/tinyusb_dfu/additions/include/tusb_dfu_rt.h
new file mode 100644
index 0000000..b34ccf6
--- /dev/null
+++ b/components/tinyusb_dfu/additions/include/tusb_dfu_rt.h
@@ -0,0 +1,37 @@
+// Copyright 2022 King Kévin <kingkevin@cuvoodoo.info>
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+#pragma once
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#include <stdint.h>
+#include "tusb.h"
+#include "tinyusb.h"
+
+/* Public functions */
+/**
+ * @brief Initialize DFU runtime.
+ *
+ * @return esp_err_t
+ */
+esp_err_t tusb_dfu_rf_init(void);
+
+/** Public functions*/
+
+#ifdef __cplusplus
+}
+#endif
diff --git a/components/tinyusb_dfu/additions/src/tusb_dfu_rt.c b/components/tinyusb_dfu/additions/src/tusb_dfu_rt.c
index 98b86dc..b4d18eb 100644
--- a/components/tinyusb_dfu/additions/src/tusb_dfu_rt.c
+++ b/components/tinyusb_dfu/additions/src/tusb_dfu_rt.c
@@ -19,13 +19,30 @@
 #include "esp_partition.h"
 #include "esp_ota_ops.h"
 #include "tusb.h"
+#include "tusb_dfu_rt.h"
 #include "sdkconfig.h"
 
 static const char *TAG = "tusb_dfu_rt";
 
+esp_err_t tusb_dfu_rf_init(void)
+{
+    // verify if factory partition exists
+    const esp_partition_t *factory = esp_partition_find_first(ESP_PARTITION_TYPE_APP, ESP_PARTITION_SUBTYPE_APP_FACTORY, NULL);
+    if (!factory) {
+        return ESP_ERR_NOT_FOUND;
+    }
+    // verify if ota data partition exists
+    const esp_partition_t *otadata = esp_partition_find_first(ESP_PARTITION_TYPE_DATA, ESP_PARTITION_SUBTYPE_DATA_OTA, NULL);
+    if (!otadata) {
+        return ESP_ERR_NOT_FOUND;
+    }
+    return ESP_OK;
+}
+
 /* TinyUSB callbacks */
 
 // Invoked on DFU_DETACH request to reboot to the bootloader
+// WARNING: function linked until public function (e.g. tusb_dfu_rf_init) is called
 void tud_dfu_runtime_reboot_to_dfu_cb(void)
 {
     ESP_LOGI(TAG, "reboot");
@@ -42,5 +59,3 @@ void tud_dfu_runtime_reboot_to_dfu_cb(void)
     }
     esp_restart();
 }
-
-/*********************************************************************** TinyUSB callbacks*/