diff --git a/soi.py b/soi.py
new file mode 100644
index 0000000..f5e02f9
--- /dev/null
+++ b/soi.py
@@ -0,0 +1,26 @@
+import os
+import mmap
+
+def remove_twice_soi(imgdata):
+	first_soi_index = imgdata.find(b'\xff\xd8') + 2
+	main_data = imgdata[first_soi_index:]
+	return imgdata[:first_soi_index] + main_data.replace(b'\xff\xd8', b'\x00\x00')
+
+if __name__ == '__main__':
+	for root, dirs, files in os.walk(os.curdir):
+		for file in files:
+			if (file.startswith('FJIMG_')):
+				print(os.path.join(root, file))
+				print('read')
+				readbytes = b''
+				soi = False
+				img = open(os.path.join(root, file), 'rb')
+				readbytes = img.read()
+				corrected = remove_twice_soi(readbytes)
+				img.close()
+				print('write')
+				newimg = open(os.path.join(root, file.replace('FJIMG_', 'corrected_')), 'wb')
+				newimg.write(corrected)
+				newimg.close()
+				print('OK')
+				print('')