This patch works only for version v82. If you have downloaded first patch v63-v81 and then trying to patch v82-v83, the second one won't work, because v81-v82 is missing. There's no manual patch v81-v82, because it would be simply simply too big... 2.5 GB is more that can be patched manually.
To update your client version to the newest one, simply click Verify button on patcher.