I have read the entire thread and tried everything listed. I believe my problem is that I can\'t use the new updater (the .jar file). I have tried steps 2a and 2b but both times it gives me the following error:

Exception in thread \"main\" java.lang.UnsupportedClassVersionError: Updater (Unsupported major.minor version 49.0)
   at java.lang.ClassLoader.defineClass0(Native Method)
    at java.lang.ClassLoader.defineClass(ClassLoader.java:539)
  at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:123)
  at java.net.URLClassLoader.defineClass(URLClassLoader.java:251)
 at java.net.URLClassLoader.access$100(URLClassLoader.java:55)
   at java.net.URLClassLoader$1.run(URLClassLoader.java:194)
   at java.security.AccessController.doPrivileged(Native Method)
   at java.net.URLClassLoader.findClass(URLClassLoader.java:187)
   at java.lang.ClassLoader.loadClass(ClassLoader.java:289)
    at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:274)
    at java.lang.ClassLoader.loadClass(ClassLoader.java:235)
    at java.lang.ClassLoader.loadClassInternal(ClassLoader.java:302)

Edit:
I got it to work using the updater-old.jar from the Read Before Posting guide. This was mentioned in another thread and I believe fixed in that version, but not in the \'new one\'.