diff --git a/main.go b/main.go
index 2857a50..e98d4cf 100644
--- a/main.go
+++ b/main.go
@@ -2,9 +2,7 @@ package main
 
 import (
 	"flag"
-	"fmt"
 	"log"
-	"os"
 
 	_ "github.com/codingsince1985/checksum"
 )
@@ -17,39 +15,14 @@ func main() {
 	sdir := *source_dir
 	tdir := *target_dir
 	br := *branch
+
 	var source_dir_branch string = sdir + br + "/"
 	var target_dir_branch string = tdir + br + "/"
+
+	//generate manifest file for branch
 	err := generate_manifest(source_dir_branch)
 	if err != nil {
 		log.Println("Error generating Manifest file: ", err)
 	}
 	release_branch(*branch, source_dir_branch, target_dir_branch)
 }
-
-func release_branch(branch string, source_dir string, target_dir string) {
-	checkOldFolder, _ := os.ReadDir(source_dir)
-	checkNewFolder, _ := os.ReadDir(target_dir)
-	var newImages bool = false
-	if len(checkOldFolder) > 0 {
-		newImages = true
-	}
-
-	if newImages {
-		// delete old firmware files in public folder
-		for _, file := range checkNewFolder {
-			err := os.Remove(target_dir + file.Name())
-			if err != nil {
-				log.Println("error deleting file: ", err)
-			} else {
-				log.Println("removed file: ", file.Name())
-			}
-		}
-
-		//move new files to folder
-		for _, file := range checkOldFolder {
-			os.Rename(source_dir+file.Name(), target_dir+file.Name())
-			fmt.Println("moved file: ", file.Name())
-		}
-
-	}
-}
diff --git a/manifest.go b/manifest.go
index 3838561..d18032c 100644
--- a/manifest.go
+++ b/manifest.go
@@ -14,13 +14,14 @@ import (
 )
 
 func generate_manifest(dir string) error {
-	files, err := get_files(dir)
+	sysdir := dir + "sysupgrade/"
+	files, err := get_files(sysdir)
 	if err != nil {
-		log.Println("Error reading Image Files in folder: ", dir)
+		log.Println("Error reading Image Files in folder: ", sysdir)
 		return err
 	}
-	file_struct := split_filenames(files, dir)
-	build_manifest(file_struct, dir)
+	file_struct := split_filenames(files, sysdir)
+	build_manifest(file_struct, sysdir)
 	return err
 }
 
diff --git a/release.go b/release.go
new file mode 100644
index 0000000..6e86729
--- /dev/null
+++ b/release.go
@@ -0,0 +1,35 @@
+package main
+
+import (
+	"fmt"
+	"log"
+	"os"
+)
+
+func release_branch(branch string, source_dir string, target_dir string) {
+	checkOldFolder, _ := os.ReadDir(source_dir)
+	checkNewFolder, _ := os.ReadDir(target_dir)
+	var newImages bool = false
+	if len(checkOldFolder) > 0 {
+		newImages = true
+	}
+
+	if newImages {
+		// delete old firmware files in public folder
+		for _, file := range checkNewFolder {
+			err := os.Remove(target_dir + file.Name())
+			if err != nil {
+				log.Println("error deleting file: ", err)
+			} else {
+				log.Println("removed file: ", file.Name())
+			}
+		}
+
+		//move new files to folder
+		for _, file := range checkOldFolder {
+			os.Rename(source_dir+file.Name(), target_dir+file.Name())
+			fmt.Println("moved file: ", file.Name())
+		}
+
+	}
+}