Fix error when using 7-Zip with an unlaunched NAND

HiyaCFW_Helper.py

@@ -11,7 +11,7 @@
 from tkinter.messagebox import askokcancel, showerror, showinfo, WARNING
 from tkinter.filedialog import askopenfilename, askdirectory
 from platform import system
-from os import path, remove, listdir
+from os import path, remove, chmod, listdir
 from sys import exit
 from threading import Thread
 from queue import Queue, Empty
@@ -618,9 +618,17 @@ def get_launcher(self):
         # Delete contents of the launcher folder as it will be replaced by the one from HiyaCFW
         launcher_folder = path.join(self.sd_path, 'title', '00030017', app, 'content')
 
-        # Walk through all files in the launcher content folder and delete them
+        # Walk through all files in the launcher content folder
         for file in listdir(launcher_folder):
-            remove(path.join(launcher_folder, file))
+            file = path.join(launcher_folder, file)
+
+            # Set current file as read/write in case we extracted with 7-Zip and unlaunch was
+            # installed in the NAND. Fatcat doesn't keep file attributes
+            if _7z is not None:
+                chmod(file, 438)
+
+            # Delete current file
+            remove(file)
 
         # Try to use already downloaded launcher
         try: