diff --git a/nodes.py b/nodes.py
index cdbd5d6..3ad84c6 100644
--- a/nodes.py
+++ b/nodes.py
@@ -14,15 +14,15 @@ from torchvision import transforms
 logger = logging.getLogger(__name__)
 
 # Define URLs for data.bin and embeddings.db on HuggingFace
-DATA_BIN_URL = "https://huggingface.co/your-username/your-repo/raw/main/data.bin"
-EMBEDDINGS_DB_URL = "https://huggingface.co/your-username/your-repo/raw/main/embeddings.db"
+DATA_BIN_URL = "https://huggingface.co/iggy101/MotionVideoSearch/raw/main/index.faiss"
+EMBEDDINGS_DB_URL = "https://huggingface.co/iggy101/MotionVideoSearch/raw/main/data.sqlite"
 
 # Directory to store downloaded files
 DATA_DIR = Path(__file__).parent / "data"
 DATA_DIR.mkdir(parents=True, exist_ok=True)
 
-INDEX_PATH = DATA_DIR / "data.bin"
-EMBEDDINGS_DB_PATH = DATA_DIR / "embeddings.db"
+INDEX_PATH = DATA_DIR / "index.faiss"
+EMBEDDINGS_DB_PATH = DATA_DIR / "data.sqlite"
 EMBEDDING_DIM = 768
 
 _dinov2_vitb14_reg = None
@@ -57,22 +57,52 @@ def download_file(url, dest_path):
 
 def ensure_file_exists(file_path, url):
     """
-    Ensures that the file exists locally; downloads it from the URL if it does not.
+    Ensures that the file exists locally, and uses ETag to detect if it needs updating.
+    If ETag indicates the remote file changed, download the new version.
     """
+    local_etag_path = file_path.with_suffix(file_path.suffix + ".etag")
+
+    # Attempt to retrieve the remote ETag
+    remote_etag = None
+    try:
+        head_resp = requests.head(url, allow_redirects=True)
+        head_resp.raise_for_status()
+        remote_etag = head_resp.headers.get("ETag")
+    except requests.exceptions.RequestException as e:
+        logger.warning(f"Failed to retrieve ETag for {url}: {e}")
+
+    # If the file does not exist locally, always download
     if not file_path.exists():
         logger.info(f"{file_path.name} not found. Downloading from HuggingFace...")
         download_file(url, file_path)
+        if remote_etag:
+            local_etag_path.write_text(remote_etag)
+        return
+
+    # If we have a remote ETag, compare to local ETag
+    if remote_etag:
+        if local_etag_path.exists():
+            local_etag = local_etag_path.read_text().strip()
+            # If they match, do nothing
+            if local_etag == remote_etag:
+                logger.info(f"{file_path.name} is already up to date (ETag match).")
+                return
+        # Otherwise, re-download
+        logger.info(f"{file_path.name} is outdated. Downloading new version from HuggingFace...")
+        download_file(url, file_path)
+        local_etag_path.write_text(remote_etag)
     else:
-        logger.info(f"{file_path.name} already exists.")
+        # If no remote ETag is available, default to the old logic
+        logger.info(f"{file_path.name} already exists (no ETag to compare).")
 
 def load_model_and_index():
     """
     Loads DINOv2 model and the FAISS index (if not already loaded).
-    Downloads required files if they are missing.
+    Downloads required files if they are missing or outdated.
     """
     global _dinov2_vitb14_reg, _faiss_index
 
-    # Ensure that data.bin and embeddings.db are present
+    # Ensure that data.bin and embeddings.db are present/updated
     ensure_file_exists(INDEX_PATH, DATA_BIN_URL)
     ensure_file_exists(EMBEDDINGS_DB_PATH, EMBEDDINGS_DB_URL)
 
@@ -132,7 +162,7 @@ class IG_MotionVideoSearch:
         device = torch.device("cuda" if torch.cuda.is_available() else "cpu")
 
         # 2. Convert ComfyUI image (torch tensor) into a PIL Image
-        c_img = image  # Directly use the tensor without indexing
+        c_img = image
         if c_img.ndim == 4:
             # Assume shape is [batch_size, C, H, W]
             if c_img.size(0) > 1:
@@ -204,4 +234,4 @@ class IG_MotionVideoSearch:
         conn.close()
 
         status = "\n".join(results_str)
-        return (*urls, status)
\ No newline at end of file
+        return (*urls, status)