Allow the previous version to upgrade correctly

debian/changelog

@@ -1,3 +1,16 @@
+raspi-config (20150131-3) unstable; urgency=low
+
+  * Add prerm failed-upgrade to allow upgrades
+
+ -- Serge Schneider <serge@raspberrypi.org>  Wed, 06 May 2015 15:33:35 +0100
+
+raspi-config (20150131-2) unstable; urgency=low
+
+  * Prevent postinstall from trying to stop /etc/init.d/raspi-config
+  dh_installinit --noscripts
+
+ -- Serge Schneider <serge@raspberrypi.org>  Wed, 06 May 2015 14:23:57 +0100
+
 raspi-config (20150131-1) unstable; urgency=low
 
   * Add Pi2 overclock preset

debian/raspi-config.prerm

@@ -0,0 +1,36 @@
+#! /bin/sh
+# prerm script for raspi-config
+#
+# see: dh_installdeb(1)
+
+set -e
+
+# summary of how this script can be called:
+#        * <prerm> `remove'
+#        * <prerm> `purge'
+#        * <old-prerm> `upgrade' <new-version>
+#        * <new-prerm> `failed-upgrade' <old-version>
+#        * <new-prerm> `abort-install'
+#        * <new-prerm> `abort-install' <old-version>
+#        * <new-prerm> `abort-upgrade' <old-version>
+#        * <disappearer's-prerm> `disappear' <overwriter> <new-version>
+# for details, see http://www.debian.org/doc/debian-policy/ or
+# the debian-policy package
+
+
+case "$1" in
+	purge|remove|upgrade)
+		;;
+
+	failed-upgrade|abort-install|abort-upgrade|disappear)
+		;;
+
+	*)
+		echo "prerm called with unknown argument \`$1'" >&2
+		exit 1
+		;;
+esac
+
+#DEBHELPER#
+
+exit 0

debian/rules

@@ -9,5 +9,8 @@
 # Uncomment this to turn on verbose mode.
 #export DH_VERBOSE=1
 
+override_dh_installinit:
+	dh_installinit --noscripts
+
 %:
 	dh $@