diff --git a/service/rauc.go b/service/rauc.go
index 1fde2d6..58f1482 100644
--- a/service/rauc.go
+++ b/service/rauc.go
@@ -14,7 +14,7 @@ import (
 )
 
 const (
-	FlagUpgradeFile = "/var/lib/casaos/upgradInfo.txt"
+	FlagUpgradeFile = "/var/lib/casaos/upgradeInfo.txt"
 )
 
 func ExtractRAUCRelease(packageFilepath string, release codegen.Release) error {
@@ -46,7 +46,7 @@ func InstallRAUC(release codegen.Release, sysRoot string, InstallRAUCHandler fun
 
 func InstallRAUCImp(raucFilePath string) error {
 	// install rauc
-	fmt.Println("rauc路径为:", raucFilePath)
+	fmt.Println("rauc path: ", raucFilePath)
 
 	raucInstaller, err := rauc.InstallerNew()
 	if err != nil {
@@ -71,7 +71,7 @@ func InstallRAUCImp(raucFilePath string) error {
 
 func MockInstallRAUC(raucFilePath string) error {
 	// to check file exist
-	fmt.Println("文件名为", raucFilePath)
+	fmt.Println("filename: ", raucFilePath)
 	if _, err := os.Stat(raucFilePath); os.IsNotExist(err) {
 		return fmt.Errorf("not found rauc install package")
 	}
diff --git a/service/rauc_offline.go b/service/rauc_offline.go
index 41e2c34..4fe125b 100644
--- a/service/rauc_offline.go
+++ b/service/rauc_offline.go
@@ -53,6 +53,10 @@ func (r *RAUCOfflineService) VerifyRelease(release codegen.Release) (string, err
 	return r.CheckSumHandler(release)
 }
 
+func CleanupOfflineRAUCTemp(sysRoot string) error {
+	return os.RemoveAll(filepath.Join(sysRoot, config.OFFLINE_RAUC_TEMP_PATH))
+}
+
 func (r *RAUCOfflineService) DownloadRelease(ctx context.Context, release codegen.Release, force bool) (string, error) {
 	releasePath, err := r.VerifyRelease(release)
 	if err != nil {
diff --git a/service/release.go b/service/release.go
index b2d3373..d9e6021 100644
--- a/service/release.go
+++ b/service/release.go
@@ -19,6 +19,8 @@ import (
 	"github.com/Masterminds/semver/v3"
 	"go.uber.org/zap"
 	"gopkg.in/yaml.v3"
+
+	"github.com/samber/lo"
 )
 
 var (
@@ -229,7 +231,16 @@ func CheckOfflineTarExist(sysRoot string) bool {
 	// if the file have "*.tar" return true
 	files := internal.GetAllFile(filepath.Join(sysRoot, config.RAUC_OFFLINE_PATH))
 	println("files : ", files)
-	if len(files) == 1 {
+
+	// only allow one tar file
+	tar_files := lo.FilterMap(files, func(filename string, _ int) (string, bool) {
+		if strings.HasSuffix(filename, ".tar") {
+			return filename, true
+		}
+		return "", false
+	})
+
+	if len(tar_files) == 1 {
 		file_name := files[0]
 		if strings.HasSuffix(file_name, ".tar") {
 			println("find offline rauc file: ", file_name)
diff --git a/service/service.go b/service/service.go
index 10fc464..06ec0e7 100644
--- a/service/service.go
+++ b/service/service.go
@@ -168,6 +168,8 @@ func NewService(RuntimePath string) Services {
 }
 
 func NewInstallerService(sysRoot string) UpdaterServiceInterface {
+
+	CleanupOfflineRAUCTemp(sysRoot)
 	installMethod, err := GetInstallMethod(sysRoot)
 	if err != nil {
 		panic(err)
diff --git a/types/installer_type.go b/types/installer_type.go
index 5a6a48a..b8af4a3 100644
--- a/types/installer_type.go
+++ b/types/installer_type.go
@@ -9,8 +9,7 @@ const (
 type TriggerType string
 
 const (
-	HTTP_CHECK TriggerType = "http-request-check"
-
+	HTTP_CHECK   TriggerType = "http-request-check"
 	HTTP_REQUEST TriggerType = "http-request-trigger"
 	CRON_JOB     TriggerType = "cron-job-trigger"
 	INSTALL      TriggerType = "install-trigger"