diff --git a/_config.yml b/_config.yml
index b78ec67b..3513aad8 100644
--- a/_config.yml
+++ b/_config.yml
@@ -10,7 +10,7 @@ google_analytics: UA-119938781-2
 disqus_url: "https://pupil.disqus.com"
 
 github:
-  app_url: https://github.com/tom5079/Pupil-issue/releases/download/2.5.1/Pupil-v2.5.1.apk
+  app_url: https://github.com/tom5079/Pupil-issue/releases/download/2.5.2/Pupil-v2.5.2.apk
   issue_url: https://github.com/tom5079/Pupil-issue/issues/new/choose
 
 t:
diff --git a/assets/images/manual/viewer.png b/assets/images/manual/viewer.png
index adaf5c3a..15a604ec 100755
Binary files a/assets/images/manual/viewer.png and b/assets/images/manual/viewer.png differ