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* You must use Google Chrome version 31 or greater for Portable Native
- Client. Make sure you have Portable Native Client installed in
- ``about:nacl``; if not open ``about:components`` and "Check for
- update" for PNaCl.
-* PNaCl ``.pexe`` must be compiled with pepper_31 SDK or higher (earlier
- SDK versions had experimental support for PNaCl, now deprecated).
+ Client. Please `upgrade now <http://www.google.com/chrome/>`_ if you are
+ not. If you're already using a recent version, open ``about:components`` and
+ "Check for update" for PNaCl. Find your version of chrome by openning
+ ``about:chrome``.
+* A PNaCl ``.pexe`` must be compiled with pepper_31 SDK or higher. :ref:`Update
+ your bundles <updating-bundles>` and make sure you're using a version of
+ Chrome that matches the SDK version.
* Your application can verify that Portable Native Client is supported
in JavaScript with ``navigator.mimeTypes['application/x-pnacl'] !==
undefined``. This is preferred over checking the Chrome version.