Index: scripts/update_package_script/update_package.py
===================================================================
diff -u -r28ee439966c2b482352f1cadd913d558fcac2a05 -rdd30a8caf586169db067d42da875a31507628e8d
--- scripts/update_package_script/update_package.py	(.../update_package.py)	(revision 28ee439966c2b482352f1cadd913d558fcac2a05)
+++ scripts/update_package_script/update_package.py	(.../update_package.py)	(revision dd30a8caf586169db067d42da875a31507628e8d)
@@ -1,4 +1,6 @@
+import os
 import can
+import struct
 from scripts.base.base import Base
 
 
@@ -17,7 +19,6 @@
     def _get_target_stack(self):
         pass
 
-
     def update_software_packages(self, packages_dir: str, stack_to_update: str = None):
         # 1. Verify signature
         # 2. Verify key
@@ -27,5 +28,66 @@
         # 6. Wait for the bootloader to ack/nack or timeout after 3000 ms
         # 7. Send the entire file
         # 8. Show progress
-        pass
+
+        signature_start_in_bytes = bytes(self.SIGNATURE_START, 'utf-8')
+        signature_end_in_bytes = bytes(self.SIGNATURE_END, 'utf-8')
+
+        for file in os.listdir(packages_dir):
+            if file.endswith(".bin"):
+                signature_line = ''
+                xml_report_bytes = bytearray()
+                has_signature_been_found = False
+                found = 0
+                with open(os.path.join(packages_dir, file), 'rb') as f:
+                    for line in f:
+                        if signature_start_in_bytes in line:
+                            if signature_end_in_bytes in line:
+                                signature_line = line[len(signature_start_in_bytes):line.find(signature_end_in_bytes)]
+                                xml_start = line[line.find(signature_end_in_bytes) + len(signature_end_in_bytes):]
+                                print((xml_start[0]), [hex(j) for j in xml_start], bytearray(xml_start))
+                                has_signature_been_found = True
+                                a = int(xml_start[0])
+                                b = int(xml_start[1])
+                                code = (a << 8) + b
+                                print(a, b, code)
+                                found = 0
+                                for s in range(0, 0xFF):
+                                    test = ((s % 19) << 8) + (s % 23)
+                                    if code == test:
+                                        print("breaking {} {} {}".format(code, test, s))
+                                        found = s
+                                        break
+                                xml_list = list()
+                                for d in range(2,len(xml_start)):
+                                    value = xml_start[d]
+                                    xml_list.append((value - found) % 256)
+                                    found += 211
+
+                                converted_xml = ''.join(chr(c) for c in xml_list)
+
+                                print(xml_list, converted_xml.replace('\n', ''))
+                                #test = struct.unpack('c', bytearray(xml_start[:1]))
+                                #print(test, xml_list[:].decode('utf-8'))
+                            else:
+                                pass
+                                # TODO fill up
+                        elif has_signature_been_found:
+                            xml_start = line
+                            xml_list = list()
+                            for d in xml_start:
+                                value = d
+                                xml_list.append((value - found) % 256)
+                                found += 211
+
+                            converted_xml = ''.join(chr(c) for c in xml_list)
+
+                            print(converted_xml.replace('\n', ''))
+
+                            if "</root>" in converted_xml:
+                                print(line)
+                f.close()
+
+
+
+
     
\ No newline at end of file