diff -Nru ubuntu-core-upgrader-0.7.10+ppa2/debian/changelog ubuntu-core-upgrader-0.7.13~ppa1/debian/changelog
--- ubuntu-core-upgrader-0.7.10+ppa2/debian/changelog	2015-06-04 21:12:53.000000000 +0000
+++ ubuntu-core-upgrader-0.7.13~ppa1/debian/changelog	2015-09-15 07:06:11.000000000 +0000
@@ -1,4 +1,25 @@
-ubuntu-core-upgrader (0.7.10+ppa2) vivid; urgency=medium
+ubuntu-core-upgrader (0.7.13~ppa1) vivid; urgency=medium
+
+  * backport to vivid
+
+ -- Michael Vogt <michael.vogt@ubuntu.com>  Tue, 15 Sep 2015 09:06:08 +0200
+
+ubuntu-core-upgrader (0.7.13) wily; urgency=low
+
+  * fix pyflakes error
+
+ -- Michael Vogt <michael.vogt@ubuntu.com>  Wed, 17 Jun 2015 16:56:32 +0200
+
+ubuntu-core-upgrader (0.7.12) wily; urgency=low
+
+  * ubuntucoreupgrader/apply.py:
+    - always send json progress on stdout to have progress for
+      snapyp with s-i 3.0 that does not store the progress information
+      in its global config
+
+ -- Michael Vogt <michael.vogt@ubuntu.com>  Wed, 17 Jun 2015 15:44:49 +0200
+
+ubuntu-core-upgrader (0.7.11) wily; urgency=medium
 
   * ubuntucoreupgrader/upgrader.py: Call os.sync() at end of sync_partitions()
     and after each unpack to minimise unflushed data and thus minimise the
diff -Nru ubuntu-core-upgrader-0.7.10+ppa2/ubuntucoreupgrader/apply.py ubuntu-core-upgrader-0.7.13~ppa1/ubuntucoreupgrader/apply.py
--- ubuntu-core-upgrader-0.7.10+ppa2/ubuntucoreupgrader/apply.py	2015-03-13 08:04:13.000000000 +0000
+++ ubuntu-core-upgrader-0.7.13~ppa1/ubuntucoreupgrader/apply.py	2015-06-17 14:57:51.000000000 +0000
@@ -5,6 +5,7 @@
 import sys
 
 from systemimage.config import config
+config  # pyflakes
 
 
 class ApplyUpgradeError(Exception):
@@ -39,11 +40,9 @@
         stdout = ""
         while p.poll() is None:
             # send alive ping
-            if getattr(config, "machine_readable", False):
-                # ensure its written out
-                sys.stdout.write(json.dumps({"type": "spinner",
-                                             "msg": "Applying update"})+"\n")
-                sys.stdout.flush()
+            sys.stdout.write(json.dumps({"type": "spinner",
+                                         "msg": "Applying update"})+"\n")
+            sys.stdout.flush()
             if select.select([p.stdout.fileno()], [], [], 0.1) != ([], [], []):
                 stdout += p.stdout.read(1).decode("utf-8", errors="replace")
         # get return code