diff --git a/agent/internal/httpapi/models_status_test.go b/agent/internal/httpapi/models_status_test.go
index e42d5b1..046531c 100644
--- a/agent/internal/httpapi/models_status_test.go
+++ b/agent/internal/httpapi/models_status_test.go
@@ -14,17 +14,13 @@ import (
 func TestHandleModelsStatusReturnsInstalledModels(t *testing.T) {
 	dir := t.TempDir()
 	store := modelstore.New(dir, 8)
-	itemDir := store.FilesDir()
-	if err := os.MkdirAll(itemDir, 0o755); err != nil {
+	if err := os.MkdirAll(dir, 0o755); err != nil {
 		t.Fatalf("MkdirAll: %v", err)
 	}
-	modelPath := filepath.Join(itemDir, "face_det_scrfd_500m_640_rk3588__abc.rknn")
+	modelPath := filepath.Join(dir, "face_det_scrfd_500m_640_rk3588.rknn")
 	if err := os.WriteFile(modelPath, []byte("abc"), 0o644); err != nil {
 		t.Fatalf("WriteFile: %v", err)
 	}
-	if err := os.WriteFile(store.ManifestPath(), []byte(`{"items":[{"name":"face_det_scrfd_500m_640_rk3588","sha256":"abc","path":"`+filepath.ToSlash(modelPath)+`","size":3,"mtime_ms":1}]}`), 0o644); err != nil {
-		t.Fatalf("WriteFile manifest: %v", err)
-	}
 
 	srv := &Server{store: store}
 	req := httptest.NewRequest(http.MethodGet, "/v1/models/status", nil)
diff --git a/agent/internal/modelstore/modelstore.go b/agent/internal/modelstore/modelstore.go
index 99958cf..48e3cce 100644
--- a/agent/internal/modelstore/modelstore.go
+++ b/agent/internal/modelstore/modelstore.go
@@ -9,6 +9,7 @@ import (
 	"io"
 	"os"
 	"path/filepath"
+	"sort"
 	"strings"
 
 	"rk3588sys/agent/internal/files"
@@ -146,25 +147,80 @@ func (s *Store) List() (Manifest, error) {
 }
 
 func (s *Store) ListInstalledModels() ([]InstalledModel, error) {
-	manifest, err := s.List()
+	paths, err := s.installedModelPaths()
 	if err != nil {
 		return nil, err
 	}
-	items := make([]InstalledModel, 0, len(manifest.Items))
-	for _, item := range manifest.Items {
-		fileName := filepath.Base(filepath.FromSlash(item.Path))
+	items := make([]InstalledModel, 0, len(paths))
+	for _, path := range paths {
+		stat, err := os.Stat(path)
+		if err != nil {
+			return nil, fmt.Errorf("stat model %q: %w", path, err)
+		}
+		sha, err := fileSHA256(path)
+		if err != nil {
+			return nil, fmt.Errorf("hash model %q: %w", path, err)
+		}
+		fileName := filepath.Base(path)
 		items = append(items, InstalledModel{
-			Name:     item.Name,
+			Name:     modelNameFromFileName(fileName),
 			FileName: fileName,
-			Sha256:   item.Sha256,
-			Path:     item.Path,
-			Size:     item.Size,
-			MtimeMS:  item.MtimeMS,
+			Sha256:   sha,
+			Path:     filepath.ToSlash(path),
+			Size:     stat.Size(),
+			MtimeMS:  stat.ModTime().UnixMilli(),
 		})
 	}
+	sort.Slice(items, func(i, j int) bool {
+		return items[i].FileName < items[j].FileName
+	})
 	return items, nil
 }
 
+func (s *Store) installedModelPaths() ([]string, error) {
+	patterns := []string{
+		filepath.Join(s.ModelsDir, "*.rknn"),
+		filepath.Join(s.FilesDir(), "*.rknn"),
+	}
+	seen := map[string]struct{}{}
+	paths := make([]string, 0)
+	for _, pattern := range patterns {
+		matches, err := filepath.Glob(pattern)
+		if err != nil {
+			return nil, fmt.Errorf("glob models %q: %w", pattern, err)
+		}
+		for _, match := range matches {
+			if _, ok := seen[match]; ok {
+				continue
+			}
+			seen[match] = struct{}{}
+			paths = append(paths, match)
+		}
+	}
+	return paths, nil
+}
+
+func fileSHA256(path string) (string, error) {
+	f, err := os.Open(path)
+	if err != nil {
+		return "", err
+	}
+	defer f.Close()
+	h := sha256.New()
+	if _, err := io.Copy(h, f); err != nil {
+		return "", err
+	}
+	return hex.EncodeToString(h.Sum(nil)), nil
+}
+
+func modelNameFromFileName(fileName string) string {
+	base := strings.TrimSuffix(fileName, filepath.Ext(fileName))
+	if name, _, ok := strings.Cut(base, "__"); ok {
+		return name
+	}
+	return base
+}
+
 func (s *Store) upsertManifest(item Item) error {
 	m, err := s.List()
 	if err != nil {
diff --git a/agent/internal/modelstore/modelstore_test.go b/agent/internal/modelstore/modelstore_test.go
index 2c40704..8dcf1ba 100644
--- a/agent/internal/modelstore/modelstore_test.go
+++ b/agent/internal/modelstore/modelstore_test.go
@@ -1,12 +1,48 @@
 package modelstore
 
 import (
+	"crypto/sha256"
+	"encoding/hex"
 	"os"
 	"path/filepath"
 	"testing"
 )
 
-func TestListInstalledModelsUsesManifestEntries(t *testing.T) {
+func TestListInstalledModelsScansModelsDirWithoutManifest(t *testing.T) {
+	dir := t.TempDir()
+	store := New(dir, 8)
+	if err := os.MkdirAll(store.ModelsDir, 0o755); err != nil {
+		t.Fatalf("MkdirAll: %v", err)
+	}
+	content := []byte("abc")
+	modelPath := filepath.Join(store.ModelsDir, "face_det_scrfd_500m_640_rk3588.rknn")
+	if err := os.WriteFile(modelPath, content, 0o644); err != nil {
+		t.Fatalf("WriteFile: %v", err)
+	}
+	if err := os.WriteFile(filepath.Join(store.ModelsDir, "readme.txt"), []byte("ignore"), 0o644); err != nil {
+		t.Fatalf("WriteFile readme: %v", err)
+	}
+
+	items, err := store.ListInstalledModels()
+	if err != nil {
+		t.Fatalf("ListInstalledModels: %v", err)
+	}
+	if len(items) != 1 {
+		t.Fatalf("unexpected installed models: %#v", items)
+	}
+	expectedSHA := sha256.Sum256(content)
+	if items[0].Name != "face_det_scrfd_500m_640_rk3588" {
+		t.Fatalf("unexpected model name: %#v", items[0])
+	}
+	if items[0].FileName != "face_det_scrfd_500m_640_rk3588.rknn" {
+		t.Fatalf("unexpected file name: %#v", items[0])
+	}
+	if items[0].Sha256 != hex.EncodeToString(expectedSHA[:]) {
+		t.Fatalf("unexpected sha256: %#v", items[0])
+	}
+}
+
+func TestListInstalledModelsScansUploadedFilesDir(t *testing.T) {
 	dir := t.TempDir()
 	store := New(dir, 8)
 	if err := os.MkdirAll(store.FilesDir(), 0o755); err != nil {
@@ -16,9 +52,6 @@ func TestListInstalledModelsUsesManifestEntries(t *testing.T) {
 	if err := os.WriteFile(modelPath, []byte("abc"), 0o644); err != nil {
 		t.Fatalf("WriteFile: %v", err)
 	}
-	if err := os.WriteFile(store.ManifestPath(), []byte(`{"items":[{"name":"face_det_scrfd_500m_640_rk3588","sha256":"abc","path":"`+filepath.ToSlash(modelPath)+`","size":3,"mtime_ms":1}]}`), 0o644); err != nil {
-		t.Fatalf("WriteFile manifest: %v", err)
-	}
 
 	items, err := store.ListInstalledModels()
 	if err != nil {
diff --git a/agent/rk3588-agent_linux_arm64 b/agent/rk3588-agent_linux_arm64
index 9cc4ff2..056f380 100755
Binary files a/agent/rk3588-agent_linux_arm64 and b/agent/rk3588-agent_linux_arm64 differ