diff --git a/.riahub/train_configs/train.yaml b/.riahub/train_configs/train.yaml
index 9708533..d1a3a94 100644
--- a/.riahub/train_configs/train.yaml
+++ b/.riahub/train_configs/train.yaml
@@ -29,9 +29,8 @@ export:
     use_dynamo: true
     use_onnxsim: false
 model:
-    name: iq_tiny_cnn
-    params:
-        hidden_channels: 16
+    name: VTCNN1
+    params: {}
 optimization:
     loss:
         name: cross_entropy
@@ -47,7 +46,8 @@ runtime:
     amp_enabled: false
     autocast_dtype: float32
     checkpoint_every_n_epochs: 1
-    component_modules: []
+    component_modules:
+        - /opt/qmb/riahub/model/src/qmb/models/RadioML/VTCNN1.py
     device: auto
     epochs: 1
     progress_bar: false
diff --git a/.riahub/workflows/train.yaml b/.riahub/workflows/train.yaml
index 527d977..7011d41 100644
--- a/.riahub/workflows/train.yaml
+++ b/.riahub/workflows/train.yaml
@@ -15,7 +15,7 @@ permissions:
 
 jobs:
   QMB-Training:
-    runs-on: "ubuntu-latest-2080"
+    runs-on: "whitehorse-p40-qmb"
     env:
       RIAHUB_BASE_URL: ${{ vars.RIAHUB_BASE_URL || secrets.RIAHUB_BASE_URL || '' }}
       QMB_OUTPUT_ROOT: "/opt/qmb/outputs"
@@ -39,6 +39,71 @@ jobs:
           fi
 
 
+      - name: Download Selected Model
+        env:
+          RIAHUB_USER: ${{ secrets.QMBDEMO_USER }}
+          RIAHUB_TOKEN: ${{ secrets.QMBDEMO_TOKEN }}
+        run: |
+          set -euo pipefail
+          DEFAULT_BASE_URL="https://riahub.ai"
+          BASE_URL_SOURCE=${RIAHUB_BASE_URL:-$DEFAULT_BASE_URL}
+          BASE_URL_SOURCE="${BASE_URL_SOURCE%/}"
+
+          build_base_candidates() {
+            local raw="$1"
+            if [[ "$raw" =~ ^https?:// ]]; then
+              echo "$raw"
+              if [[ "$raw" == http://* ]]; then
+                echo "https://${raw#http://}"
+              elif [[ "$raw" == https://* ]]; then
+                echo "http://${raw#https://}"
+              fi
+              return
+            fi
+            echo "https://$raw"
+            echo "http://$raw"
+          }
+
+          REPO_PATH="/qoherent/qmb-mvp.git"
+          REL_PATH="src/qmb/models/RadioML/VTCNN1.py"
+          REF="db9dffb7d382993cf46f392c34a47e4cdd59585e"
+          DEST_PATH="/opt/qmb/riahub/model/src/qmb/models/RadioML/VTCNN1.py"
+          TMP_DIR=$(mktemp -d)
+          cleanup() { sudo rm -rf "$TMP_DIR"; }
+          trap cleanup EXIT
+          mapfile -t BASE_CANDIDATES < <(build_base_candidates "$BASE_URL_SOURCE")
+          CLONED=0
+          for base in "${BASE_CANDIDATES[@]}"; do
+            base="${base%/}"
+            REPO_URL="${base}${REPO_PATH}"
+            AUTHED_URL=$(printf '%s' "$REPO_URL" | sed -E "s#^(https?://)#\\1${RIAHUB_USER}:${RIAHUB_TOKEN}@#")
+            echo "Cloning model repo from $REPO_URL"
+            sudo rm -rf "$TMP_DIR"
+            if sudo git clone --filter=blob:none --no-checkout "$AUTHED_URL" "$TMP_DIR"; then
+              CLONED=1
+              break
+            fi
+          done
+          if [[ "$CLONED" -ne 1 ]]; then
+            echo "Failed to clone model repo using base URL candidates derived from: $BASE_URL_SOURCE" >&2
+            exit 1
+          fi
+          if ! command -v git-lfs >/dev/null 2>&1; then
+            sudo apt-get update -y
+            sudo apt-get install -y git-lfs
+          fi
+          sudo git -C "$TMP_DIR" lfs install --local || true
+          sudo git -C "$TMP_DIR" sparse-checkout init --no-cone
+          sudo git -C "$TMP_DIR" sparse-checkout set --no-cone -- "$REL_PATH"
+          sudo git -C "$TMP_DIR" fetch --depth=1 origin "$REF"
+          sudo git -C "$TMP_DIR" -c advice.detachedHead=false checkout FETCH_HEAD
+          sudo git -C "$TMP_DIR" lfs fetch origin --include="$REL_PATH" --exclude="" || true
+          sudo git -C "$TMP_DIR" lfs checkout || true
+          sudo mkdir -p "$(dirname "$DEST_PATH")"
+          sudo cp -f "$TMP_DIR/$REL_PATH" "$DEST_PATH"
+          sudo git -C "$TMP_DIR" remote remove origin || true
+          sudo git -C "$TMP_DIR" config --local --unset-all http.extraheader || true
+
       - name: Checkout Training Dataset
         env:
           RIAHUB_USER: ${{ secrets.QMBDEMO_USER }}
@@ -317,4 +382,4 @@ jobs:
           path: ${{ github.workspace }}/.riahub/artifacts/training
           if-no-files-found: warn
 
-# committed at 2026-05-27T02:54:53.931581+00:00
+# committed at 2026-05-27T03:13:26.168613+00:00