diff --git a/openpilot/sunnypilot/models/manager.py b/openpilot/sunnypilot/models/manager.py
index 7ba805ff95..8ca8775875 100644
--- a/openpilot/sunnypilot/models/manager.py
+++ b/openpilot/sunnypilot/models/manager.py
@@ -143,13 +143,17 @@ class ModelManagerSP:
       is_cached = False
       if len(artifact.chunks) > 0:
         from openpilot.common.file_chunker import get_chunk_name
+        num_chunks = len(artifact.chunks)
         chunks_valid = True
         for i, chunk in enumerate(artifact.chunks):
-          chunk_path = get_chunk_name(full_path, i, len(artifact.chunks))
+          chunk_path = get_chunk_name(full_path, i, num_chunks)
           if not await verify_file(chunk_path, chunk.sha256):
             chunks_valid = False
             break
-        if chunks_valid and len(artifact.chunks) > 0:
+          artifact.downloadProgress.progress = ((i + 1) / num_chunks) * 100
+          self._sync_artifact_progress(artifact)
+          self._report_status()
+        if chunks_valid and num_chunks > 0:
           is_cached = True
       else:
         if await verify_file(full_path, expected_hash):
@@ -216,6 +220,9 @@ class ModelManagerSP:
     """Downloads all models in a bundle"""
     self.selected_bundle = model_bundle
     self.selected_bundle.status = custom.ModelManagerSP.DownloadStatus.downloading
+    for model in self.selected_bundle.models:
+      model.artifact.downloadProgress.status = custom.ModelManagerSP.DownloadStatus.downloading
+    self._report_status()
     os.makedirs(destination_path, exist_ok=True)
 
     try:
@@ -260,7 +267,9 @@ class ModelManagerSP:
         self.active_bundle = get_active_bundle(self.params)
 
         if (index_to_download := self.params.get("ModelManager_DownloadIndex")) is not None:
-          if model_to_download := next((model for model in self.available_models if model.index == index_to_download), None):
+          if self.active_bundle and self.active_bundle.index == index_to_download:
+            self.params.remove("ModelManager_DownloadIndex")
+          elif model_to_download := next((model for model in self.available_models if model.index == index_to_download), None):
             try:
               self.download(model_to_download, Paths.model_root())
             except Exception as e:
diff --git a/openpilot/sunnypilot/sunnylink/athena/sunnylinkd.py b/openpilot/sunnypilot/sunnylink/athena/sunnylinkd.py
index c0534a76bf..27be6e24ed 100755
--- a/openpilot/sunnypilot/sunnylink/athena/sunnylinkd.py
+++ b/openpilot/sunnypilot/sunnylink/athena/sunnylinkd.py
@@ -28,7 +28,8 @@ from websocket import (ABNF, WebSocket, WebSocketException, WebSocketTimeoutExce
                        create_connection, WebSocketConnectionClosedException)
 
 import openpilot.cereal.messaging as messaging
-from openpilot.sunnypilot.models.default_model import get_default_model
+from openpilot.selfdrive.modeld.helpers import usbgpu_present, usbgpu_compiled
+from openpilot.sunnypilot.models.model_name import DEFAULT_MODEL, DEFAULT_BIG_MODEL
 from openpilot.sunnypilot.selfdrive.car.sync_sunnylink_params import update_car_list_param
 from openpilot.sunnypilot.sunnylink.api import SunnylinkApi
 from openpilot.sunnypilot.sunnylink.utils import sunnylink_need_register, sunnylink_ready, get_param_as_byte, save_param_from_base64_encoded_string
@@ -181,7 +182,10 @@ def getParamsMetadata() -> str:
     schema = generate_schema()
     schema["capabilities"] = generate_capabilities()
     schema["capability_labels"] = CAPABILITY_LABELS
-    schema["default_model"] = get_default_model()
+    # mirrors get_default_model() — ui_state unavailable in sunnylinkd process
+    show_big = (usbgpu_present() and usbgpu_compiled()
+                and (params.get_bool("UsbGpuActive") or params.get_bool("UsbGpuLoading") or params.get_bool("IsOffroad")))
+    schema["default_model"] = DEFAULT_BIG_MODEL if show_big else DEFAULT_MODEL
     raw = json.dumps(schema, separators=(",", ":")).encode("utf-8")
     return base64.b64encode(gzip.compress(raw)).decode("utf-8")
   except Exception: