diff --git a/Runner/suites/Multimedia/Video/Video_V4L2_Runner/run.sh b/Runner/suites/Multimedia/Video/Video_V4L2_Runner/run.sh
index 2f379f6..f9959da 100755
--- a/Runner/suites/Multimedia/Video/Video_V4L2_Runner/run.sh
+++ b/Runner/suites/Multimedia/Video/Video_V4L2_Runner/run.sh
@@ -241,15 +241,31 @@ if [ -n "$VIDEO_APP" ] && [ -f "$VIDEO_APP" ] && [ ! -x "$VIDEO_APP" ]; then
     fi
 fi
 
-# Decide final app path: if --app given, require it; otherwise try default path, else PATH
+# ---- Default firmware path for Kodiak downstream if CLI not given ----
+if [ -z "${VIDEO_FW_DS:-}" ]; then
+    default_fw="/data/vendor/iris_test_app/firmware/vpu20_1v.mbn"
+    if [ -f "$default_fw" ]; then
+        VIDEO_FW_DS="$default_fw"
+        export VIDEO_FW_DS
+        log_info "Using default downstream firmware path: $VIDEO_FW_DS"
+    fi
+fi
+
+# Decide final app path: if --app given, require it; otherwise search PATH, /usr/bin, /data/vendor/iris_test_app
 final_app=""
 
 if [ -n "$VIDEO_APP" ] && [ -x "$VIDEO_APP" ]; then
     final_app="$VIDEO_APP"
 else
-    if [ "$VIDEO_APP" = "/usr/bin/iris_v4l2_test" ]; then
-        if command -v iris_v4l2_test >/dev/null 2>&1; then
-            final_app="$(command -v iris_v4l2_test)"
+    if command -v iris_v4l2_test >/dev/null 2>&1; then
+        final_app="$(command -v iris_v4l2_test)"
+    else
+        if [ -x "/usr/bin/iris_v4l2_test" ]; then
+            final_app="/usr/bin/iris_v4l2_test"
+        else
+            if [ -x "/data/vendor/iris_test_app/iris_v4l2_test" ]; then
+                final_app="/data/vendor/iris_test_app/iris_v4l2_test"
+            fi
         fi
     fi
 fi
diff --git a/Runner/utils/lib_video.sh b/Runner/utils/lib_video.sh
index e553550..b75791a 100755
--- a/Runner/utils/lib_video.sh
+++ b/Runner/utils/lib_video.sh
@@ -451,42 +451,41 @@ video_normalize_stack() {
 video_detect_platform() {
     model=""
     compat=""
-
+ 
     if [ -r /proc/device-tree/model ]; then
         model=$(tr -d '\000' </proc/device-tree/model 2>/dev/null)
     fi
-
+ 
     if [ -r /proc/device-tree/compatible ]; then
         compat=$(tr -d '\000' </proc/device-tree/compatible 2>/dev/null)
     fi
-
+ 
     s=$(printf '%s\n%s\n' "$model" "$compat" | tr '[:upper:]' '[:lower:]')
-
-    echo "$s" | grep -q "qcs9100" && {
-        printf '%s\n' "lemans"
-        return 0
-    }
-    echo "$s" | grep -q "qcs8300" && {
-        printf '%s\n' "monaco"
-        return 0
-    }
-    echo "$s" | grep -q "qcs6490" && {
-        printf '%s\n' "kodiak"
-        return 0
-    }
-    echo "$s" | grep -q "ride-sx" && echo "$s" | grep -q "9100" && {
+ 
+    # Monaco: qcs8300-ride, iq-8275-evk, qcs8275, generic qcs8300, or ride-sx+8300
+    monaco_pat='qcs8300-ride|iq-8275-evk|qcs8275|qcs8300|ride-sx.*8300|8300.*ride-sx'
+ 
+    # LeMans: qcs9100-ride, qcs9075, generic qcs9100, or ride-sx+9100
+    lemans_pat='qcs9100-ride|qcs9075|qcs9100|ride-sx.*9100|9100.*ride-sx'
+ 
+    # Kodiak: qcs6490, qcm6490, or rb3+6490
+    kodiak_pat='qcs6490|qcm6490|rb3.*6490|6490.*rb3'
+ 
+    if printf '%s' "$s" | grep -Eq "$lemans_pat"; then
         printf '%s\n' "lemans"
         return 0
-    }
-    echo "$s" | grep -q "ride-sx" && echo "$s" | grep -q "8300" && {
+    fi
+ 
+    if printf '%s' "$s" | grep -Eq "$monaco_pat"; then
         printf '%s\n' "monaco"
         return 0
-    }
-    echo "$s" | grep -q "rb3" && echo "$s" | grep -q "6490" && {
+    fi
+ 
+    if printf '%s' "$s" | grep -Eq "$kodiak_pat"; then
         printf '%s\n' "kodiak"
         return 0
-    }
-
+    fi
+ 
     printf '%s\n' "unknown"
 }