diff --git a/.gitignore b/.gitignore
index 0ad13aa..30283e6 100644
--- a/.gitignore
+++ b/.gitignore
@@ -175,3 +175,6 @@ cython_debug/
 
 # Flatpak builder
 .flatpak-builder/
+
+# Binary files
+*.bin
diff --git a/pyinstaller/winyafi.spec b/pyinstaller/winyafi.spec
old mode 100644
new mode 100755
index 6dd9f56..a3f6335
--- a/pyinstaller/winyafi.spec
+++ b/pyinstaller/winyafi.spec
@@ -1,14 +1,14 @@
 # -*- mode: python ; coding: utf-8 -*-
 from PyInstaller.utils.hooks import collect_data_files
 
-datas = []
+datas = [('LpcCrOSEC.bin', '.')]
 datas += collect_data_files('yafi')
 
 
 a = Analysis(
     ['winyafi.py'],
     pathex=[],
-    binaries=[('WinRing0x64.dll', '.')],
+    binaries=[],
     datas=datas,
     hiddenimports=['cros_ec_python'],
     hookspath=[],
@@ -16,7 +16,7 @@ a = Analysis(
     runtime_hooks=[],
     excludes=[],
     noarchive=False,
-    optimize=0,
+    optimize=2,
 )
 pyz = PYZ(a.pure)
 
@@ -39,5 +39,6 @@ exe = EXE(
     target_arch=None,
     codesign_identity=None,
     entitlements_file=None,
+    icon=['yafi.ico'],
     uac_admin=True,
 )
diff --git a/pyinstaller/yafi.ico b/pyinstaller/yafi.ico
new file mode 100755
index 0000000..4c0731b
Binary files /dev/null and b/pyinstaller/yafi.ico differ