diff --git a/ArduCopter/ArduCopter.pde b/ArduCopter/ArduCopter.pde
index 00eb304df291b0efb82d1534226c12797d8d4651..a61cb97b6a39c05d9e73c8b9d63d46dc231ce4ac 100644
--- a/ArduCopter/ArduCopter.pde
+++ b/ArduCopter/ArduCopter.pde
@@ -1,6 +1,6 @@
 /// -*- tab-width: 4; Mode: C++; c-basic-offset: 4; indent-tabs-mode: nil -*-
 
-#define THISFIRMWARE "ArduCopter V3.1-rc1"
+#define THISFIRMWARE "ArduCopter V3.1-rc2"
 /*
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/ArduCopter/ReleaseNotes.txt b/ArduCopter/ReleaseNotes.txt
index c51ebbcfd757312c11b75573fb83cdf796643cc7..3087dcc79287fb0e2bedbfd6b2057ee0d02bf8ec 100644
--- a/ArduCopter/ReleaseNotes.txt
+++ b/ArduCopter/ReleaseNotes.txt
@@ -1,5 +1,9 @@
 ArduCopter Release Notes:
 ------------------------------------------------------------------
+ArduCopter 3.1-rc2 18-Sep-2013
+Improvements over 3.1-rc1
+1) bug fix for MOT_SPIN_ARMED to allow it to be higher than 127
+------------------------------------------------------------------
 ArduCopter 3.1-rc1 9-Sep-2013
 Improvements over 3.0.1
 1) Support for Pixhawks board
@@ -21,6 +25,7 @@ Improvements over 3.0.1
     b) altitude control fix for Loiter_turns mission command (i.e. mission version of CIRCLE mode)
     c) DO_SET_ROI fix (do not use "ROI")
 8) Distribute Loiter & Navigation calcs over 4 cycles to reduce impact on a single 100hz loop
+9) RCMAP_ parameters allow remapping input channels 1 ~ 4
 ------------------------------------------------------------------
 ArduCopter 3.0.1-rc2 / 3.0.1 11-Jul-2013
 Improvements over 3.0.1-rc1