diff --git a/demo_app/src/main.c b/demo_app/src/main.c
index 795750d..80c609e 100644
--- a/demo_app/src/main.c
+++ b/demo_app/src/main.c
@@ -66,16 +66,6 @@ void postprocess_output(uint8_t *data_in, float *data_out, size_t model_output_s
  */
 void format_output(uint8_t *buffer, const size_t buffer_size, float *model_output);
 
-/**
- * Initialize main loader table
- */
-status_t prepare_main_ldr_table()
-{
-    static struct msg_loader msg_loader_iospec = MSG_LOADER_BUF((uint8_t *)(&g_model_struct), sizeof(MlModel));
-    g_ldr_tables[0][LOADER_TYPE_IOSPEC] = &msg_loader_iospec;
-    return STATUS_OK;
-}
-
 int main(void)
 {
     status_t status = STATUS_OK;
@@ -88,8 +78,6 @@ int main(void)
     int64_t timer_start = 0;
     int64_t timer_end = 0;
 
-    prepare_main_ldr_table();
-
     do
     {
         // initialize model
@@ -100,25 +88,12 @@ int main(void)
             break;
         }
 
-        // retrieve loaders
-        struct msg_loader *msg_loader_model = g_ldr_tables[1][LOADER_TYPE_MODEL];
-        struct msg_loader *msg_loader_data = g_ldr_tables[1][LOADER_TYPE_DATA];
-        struct msg_loader *msg_loader_iospec = g_ldr_tables[0][LOADER_TYPE_IOSPEC];
-
         // load model structure
-        msg_loader_iospec->reset(msg_loader_iospec, 0);
-        status = msg_loader_iospec->save(msg_loader_iospec, (uint8_t *)(&model_struct), sizeof(MlModel));
-        BREAK_ON_ERROR_LOG(status, "iospec loader failed: %d", status);
-
-        status = model_load_struct();
+        status = model_load_struct((uint8_t *)&model_struct, sizeof(MlModel));
         BREAK_ON_ERROR_LOG(status, "Model struct load error 0x%x (%s)", status, get_status_str(status));
 
         // load model weights
-        msg_loader_model->reset(msg_loader_model, 0);
-        status = msg_loader_model->save(msg_loader_model, (uint8_t *)model_data, model_data_len);
-        BREAK_ON_ERROR_LOG(status, "Model loader failed: %d", status);
-
-        status = model_load_weights();
+        status = model_load_weights(model_data, model_data_len);
         BREAK_ON_ERROR_LOG(status, "Model weights load error 0x%x (%s)", status, get_status_str(status));
 
         // allocate buffer for input
@@ -135,11 +110,7 @@ int main(void)
         {
             preprocess_input((float *)data[batch_index], model_input, model_input_size);
 
-            msg_loader_data->reset(msg_loader_data, 0);
-            status = msg_loader_data->save(msg_loader_data, model_input, model_input_size);
-            BREAK_ON_ERROR_LOG(status, "Data loader failed: %d", status);
-
-            status = model_load_input();
+            status = model_load_input(model_input, model_input_size);
             BREAK_ON_ERROR_LOG(status, "Model input load error 0x%x (%s)", status, get_status_str(status));
 
             status = model_run();
diff --git a/include/kenning_inference_lib/core/model.h b/include/kenning_inference_lib/core/model.h
index 402f34a..eba6e55 100644
--- a/include/kenning_inference_lib/core/model.h
+++ b/include/kenning_inference_lib/core/model.h
@@ -57,7 +57,7 @@ status_t model_init();
  *
  * @returns status of the model
  */
-status_t model_load_struct();
+status_t model_load_struct(const uint8_t *model_struct_data, const size_t data_size);
 
 /**
  * Loads model weights from given buffer
@@ -67,7 +67,7 @@ status_t model_load_struct();
  *
  * @returns status of the model
  */
-status_t model_load_weights();
+status_t model_load_weights(const uint8_t *model_weights_data, const size_t data_size);
 
 /**
  * Calculates model input size based on data from model struct
@@ -86,7 +86,13 @@ status_t model_get_input_size(size_t *model_input_size);
  *
  * @returns status of the model
  */
-status_t model_load_input();
+status_t model_load_input(const uint8_t *model_input, const size_t model_input_size);
+
+status_t model_load_struct_from_loader();
+
+status_t model_load_weights_from_loader();
+
+status_t model_load_input_from_loader();
 
 /**
  * Runs model inference
diff --git a/lib/kenning_inference_lib/core/callbacks.c b/lib/kenning_inference_lib/core/callbacks.c
index ca1c396..c0f6e84 100644
--- a/lib/kenning_inference_lib/core/callbacks.c
+++ b/lib/kenning_inference_lib/core/callbacks.c
@@ -103,7 +103,7 @@ status_t data_callback(message_hdr_t *hdr, resp_message_t *resp) // TODO
 
     VALIDATE_HEADER(MESSAGE_TYPE_DATA, hdr);
 
-    status = model_load_input();
+    status = model_load_input_from_loader();
 
     CHECK_STATUS_LOG(status, resp, "model_load_input returned 0x%x (%s)", status, get_status_str(status));
 
@@ -126,7 +126,7 @@ status_t model_callback(message_hdr_t *hdr, resp_message_t *resp)
 
     VALIDATE_HEADER(MESSAGE_TYPE_MODEL, hdr);
 
-    status = model_load_weights();
+    status = model_load_weights_from_loader();
 
     CHECK_STATUS_LOG(status, resp, "model_load_weights returned 0x%x (%s)", status, get_status_str(status));
 
@@ -222,7 +222,7 @@ status_t iospec_callback(message_hdr_t *hdr, resp_message_t *resp)
 
     VALIDATE_HEADER(MESSAGE_TYPE_IOSPEC, hdr);
 
-    status = model_load_struct();
+    status = model_load_struct_from_loader();
 
     CHECK_STATUS_LOG(status, resp, "model_load_struct returned 0x%x (%s)", status, get_status_str(status));
 
diff --git a/lib/kenning_inference_lib/core/inference_server.c b/lib/kenning_inference_lib/core/inference_server.c
index e6ab052..a5a7b26 100644
--- a/lib/kenning_inference_lib/core/inference_server.c
+++ b/lib/kenning_inference_lib/core/inference_server.c
@@ -59,11 +59,8 @@ int reset_runtime_alloc(struct msg_loader *ldr, size_t n)
     return 0;
 }
 
-#endif // defined(CONFIG_LLEXT)
-
-status_t prepare_main_ldr_table()
+status_t prepare_llext_loader()
 {
-#if defined(CONFIG_LLEXT)
     static struct msg_loader msg_loader_llext = {.save = buf_save,
                                                  .save_one = buf_save_one,
                                                  .reset = reset_runtime_alloc,
@@ -71,13 +68,10 @@ status_t prepare_main_ldr_table()
                                                  .max_size = 0,
                                                  .addr = NULL};
     g_ldr_tables[0][LOADER_TYPE_RUNTIME] = &msg_loader_llext;
-#endif
-
-    static struct msg_loader msg_loader_iospec = MSG_LOADER_BUF((uint8_t *)(&g_model_struct), sizeof(MlModel));
-    g_ldr_tables[0][LOADER_TYPE_IOSPEC] = &msg_loader_iospec;
-    return STATUS_OK;
 }
 
+#endif // defined(CONFIG_LLEXT)
+
 status_t init_server()
 {
     status_t status = STATUS_OK;
@@ -90,10 +84,9 @@ status_t init_server()
 #if !defined(CONFIG_LLEXT)
     status = model_init();
     CHECK_INIT_STATUS_RET(status, "model_init returned 0x%x (%s)", status, get_status_str(status));
+#else
+    prepare_llext_loader();
 #endif
-
-    prepare_main_ldr_table();
-
     LOG_INF("Inference server started");
     return STATUS_OK;
 }
diff --git a/lib/kenning_inference_lib/core/model.c b/lib/kenning_inference_lib/core/model.c
index f12b3e1..88c10f0 100644
--- a/lib/kenning_inference_lib/core/model.c
+++ b/lib/kenning_inference_lib/core/model.c
@@ -26,21 +26,30 @@ MODEL_STATE model_get_state() { return g_model_state; }
 
 void model_reset_state() { g_model_state = MODEL_STATE_UNINITIALIZED; }
 
+status_t prepare_iospec_loader()
+{
+    static struct msg_loader msg_loader_iospec = MSG_LOADER_BUF((uint8_t *)(&g_model_struct), sizeof(MlModel));
+    g_ldr_tables[0][LOADER_TYPE_IOSPEC] = &msg_loader_iospec;
+    return STATUS_OK;
+}
+
 status_t model_init()
 {
     status_t status = STATUS_OK;
 
     status = runtime_init();
+    RETURN_ON_ERROR(status, status);
 
     if (STATUS_OK == status)
     {
         g_model_state = MODEL_STATE_INITIALIZED;
     }
 
+    status = prepare_iospec_loader();
     return status;
 }
 
-status_t model_load_struct()
+status_t model_load_struct_from_loader()
 {
     status_t status = STATUS_OK;
 
@@ -122,7 +131,7 @@ status_t model_load_struct()
     return status;
 }
 
-status_t model_load_weights()
+status_t model_load_weights_from_loader()
 {
     status_t status = STATUS_OK;
 
@@ -164,7 +173,7 @@ status_t model_get_input_size(size_t *model_input_size)
     return status;
 }
 
-status_t model_load_input()
+status_t model_load_input_from_loader()
 {
     status_t status = STATUS_OK;
 
@@ -189,6 +198,42 @@ status_t model_load_input()
     return status;
 }
 
+status_t model_load_weights(const uint8_t *model_weights_data, const size_t data_size)
+{
+    status_t status = STATUS_OK;
+    struct msg_loader *msg_loader_model = g_ldr_tables[1][LOADER_TYPE_MODEL];
+
+    msg_loader_model->reset(msg_loader_model, 0);
+    status = msg_loader_model->save(msg_loader_model, (uint8_t *)model_weights_data, data_size);
+    RETURN_ON_ERROR_LOG(status, status, "Model loader failed: %d", status);
+
+    return model_load_weights_from_loader();
+}
+
+status_t model_load_struct(const uint8_t *model_struct_data, const size_t data_size)
+{
+    status_t status = STATUS_OK;
+    struct msg_loader *msg_loader_iospec = g_ldr_tables[0][LOADER_TYPE_IOSPEC];
+
+    msg_loader_iospec->reset(msg_loader_iospec, 0);
+    status = msg_loader_iospec->save(msg_loader_iospec, model_struct_data, data_size);
+    RETURN_ON_ERROR_LOG(status, status, "iospec loader failed: %d", status);
+
+    return model_load_struct_from_loader();
+}
+
+status_t model_load_input(const uint8_t *model_input, const size_t model_input_size)
+{
+    status_t status = STATUS_OK;
+    struct msg_loader *msg_loader_data = g_ldr_tables[1][LOADER_TYPE_DATA];
+
+    msg_loader_data->reset(msg_loader_data, 0);
+    status = msg_loader_data->save(msg_loader_data, model_input, model_input_size);
+    RETURN_ON_ERROR_LOG(status, status, "Data loader failed: %d", status);
+
+    return model_load_input_from_loader();
+}
+
 status_t model_run()
 {
     status_t status = STATUS_OK;