If you’ve already purchased the pattern on Ravelry, you should be able to go into your library and download the new version for free. Here’s how to check for an update on Ravelry. If you’ve purchased the pattern from Etsy since July 2013, you should be able to download the new version on your Downloads page. Here’s how to do it.
If you’ve tried all the steps in the links above and STILL can’t find your updated pattern, send me a message and I’ll try to get back to you as soon as possible.