diff --git a/source/fs.c b/source/fs.c
index 5ade819..f6c4430 100644
--- a/source/fs.c
+++ b/source/fs.c
@@ -88,6 +88,11 @@ void fileDelete(const char *path)
     f_unlink(path);
 }
 
+void fileRename(const char *oldPath, const char *newPath)
+{
+    f_rename(oldPath, newPath);
+}
+
 u32 firmRead(void *dest)
 {
     const char *firmFolders[] = {"00000002", "20000002"};
diff --git a/source/fs.h b/source/fs.h
index 058392e..080e647 100644
--- a/source/fs.h
+++ b/source/fs.h
@@ -29,4 +29,5 @@ void unmountCtrNand(void);
 u32 fileRead(void *dest, const char *path, u32 maxSize);
 bool fileWrite(const void *buffer, const char *path, u32 size);
 void fileDelete(const char *path);
+void fileRename(const char *oldPath, const char *newPath);
 u32 firmRead(void *dest);
\ No newline at end of file
diff --git a/source/installer.c b/source/installer.c
index 95e6173..aad2a61 100755
--- a/source/installer.c
+++ b/source/installer.c
@@ -206,6 +206,8 @@ static inline void installer(bool isOtpless)
     {
         magic = 0xDEADCAFE;
 
+        fileRename("arm9loaderhax.bin", "arm9loaderhax.bak");
+
         if(!fileWrite((void *)0x23F00000, "arm9loaderhax.bin", 0x10000))
             shutdown(1, "Error: couldn't write arm9loaderhax.bin");
     }
@@ -273,7 +275,11 @@ static inline void installer(bool isOtpless)
 
         drawTitle();
 
-        if(sdmmc_sdcard_init(true, false) && mountFs(true)) fileDelete("arm9loaderhax.bin");
+        if(sdmmc_sdcard_init(true, false) && mountFs(true))
+        {
+            fileDelete("arm9loaderhax.bin");
+            fileRename("arm9loaderhax.bak", "arm9loaderhax.bin");
+        }
         else
         {
             posY = drawString("Couldn't remove arm9loaderhax.bin!", 10, posY + SPACING_Y, COLOR_RED);