Tweaks: new repo checksum, python version

Change-Id: I1b9fbf863a47908a84161792ad3bc8d423af5d36
diff --git a/src/source/initializing.md b/src/source/initializing.md
index e6f0b5e..a5a2df5 100644
--- a/src/source/initializing.md
+++ b/src/source/initializing.md
@@ -40,7 +40,7 @@
 
 In general you will need:
 
- - Python 2.4 -- 2.7, which you can download from [python.org](http://www.python.org/download/).
+ - Python 2.5 -- 2.7, which you can download from [python.org](http://www.python.org/download/).
 
  - JDK 6 if you wish to build Gingerbread or newer; JDK 5 for Froyo or older.  You can download both from [java.sun.com](http://java.sun.com/javase/downloads/).