Index: scripts/update_package_script/utilities.py
===================================================================
diff -u -rbfc43b17282fbce6b3e56639f580d11665177bfb -r4958f2a616031e26b9d0f662b4faca8b28832a53
--- scripts/update_package_script/utilities.py	(.../utilities.py)	(revision bfc43b17282fbce6b3e56639f580d11665177bfb)
+++ scripts/update_package_script/utilities.py	(.../utilities.py)	(revision 4958f2a616031e26b9d0f662b4faca8b28832a53)
@@ -92,13 +92,16 @@
         0xD2DFB272, 0xCC03DD33, 0xEF676CF0, 0xF1BB03B1, 0xA9AE0F76, 0xB7726037, 0x9416D1F4, 0x8ACABEB5,
     )
 
+    _SEND_CMD_MAIL_BOX = 0x601
+    _BROADCAST_UPDATE_MAIL_BOX = 0x606
+    MSG_ID_FFU_SIGNAL_TD_UPDATE_AVAILABLE = 0xA6
+    MSG_ID_FFu_SIGNAL_DD_UPDATE_AVAILABLE = 0xA7
+
     _SHIFT_8_BITS_FOR_BYTE_SHIFT = 8
     _SHIFT_24_BITS = 24
     _SHIFT_BITS_BY_A_NIBBLE = 4
     _NUM_OF_BYTES_PER_CAN_FRAME = 8
     _CAN_INTERFACE = 'can0'
-    _SEND_CMD_MAIL_BOX = 0x601
-    _BROADCAST_UPDATE_MAIL_BOX = 0x606
     _CAN_MSG_WAIT_FOR_RESP_S = 60.0
     _RESP_MSG_ACK = 1
     _RESP_MSG_NACK = 0