diff --git a/Utils.py b/Utils.py
new file mode 100644
index 0000000..e8fd73d
--- /dev/null
+++ b/Utils.py
@@ -0,0 +1,81 @@
+import os
+import subprocess
+import sys
+import typing
+import functools
+
+from yaml import load, dump
+
+try:
+    from yaml import CLoader as Loader
+except ImportError:
+    from yaml import Loader
+
+import xml.etree.ElementTree as ET
+
+def int16_as_bytes(value):
+    value = value & 0xFFFF
+    return [value & 0xFF, (value >> 8) & 0xFF]
+
+
+def int32_as_bytes(value):
+    value = value & 0xFFFFFFFF
+    return [value & 0xFF, (value >> 8) & 0xFF, (value >> 16) & 0xFF, (value >> 24) & 0xFF]
+
+
+
+def is_bundled():
+    return getattr(sys, 'frozen', False)
+
+def local_path(path):
+    if local_path.cached_path:
+        return os.path.join(local_path.cached_path, path)
+
+    elif is_bundled():
+        if hasattr(sys, "_MEIPASS"):
+            # we are running in a PyInstaller bundle
+            local_path.cached_path = sys._MEIPASS  # pylint: disable=protected-access,no-member
+        else:
+            # cx_Freeze
+            local_path.cached_path = os.path.dirname(os.path.abspath(sys.argv[0]))
+    else:
+        # we are running in a normal Python environment
+        import __main__
+        local_path.cached_path = os.path.dirname(os.path.abspath(__main__.__file__))
+
+    return os.path.join(local_path.cached_path, path)
+
+local_path.cached_path = None
+
+
+
+def make_new_base2current(old_rom='../alttp.sfc', new_rom='../working.sfc'):
+    from collections import OrderedDict
+    import json
+    import hashlib
+    with open(old_rom, 'rb') as stream:
+        old_rom_data = bytearray(stream.read())
+    with open(new_rom, 'rb') as stream:
+        new_rom_data = bytearray(stream.read())
+    # extend to 2 mb
+    old_rom_data.extend(bytearray([0x00]) * (2097152 - len(old_rom_data)))
+
+    out_data = OrderedDict()
+    for idx, old in enumerate(old_rom_data):
+        new = new_rom_data[idx]
+        if old != new:
+            out_data[idx] = [int(new)]
+    for offset in reversed(list(out_data.keys())):
+        if offset - 1 in out_data:
+            out_data[offset-1].extend(out_data.pop(offset))
+    with open('../base2current.json', 'wt') as outfile:
+        json.dump([{key: value} for key, value in out_data.items()], outfile, separators=(",", ":"))
+
+    basemd5 = hashlib.md5()
+    basemd5.update(new_rom_data)
+    return "New Rom Hash: " + basemd5.hexdigest()
+
+
+if __name__ == '__main__':
+    print(make_new_base2current())
+