Here's the easiest explanation. Download the .233 zip. That's what I'm running. put it on your SD card, and rename it "Update" so that it reads "update.zip". Boot into stock recovery by shutting down then phone, then power back up while holding both volume buttons. Select "stock recovery" from the boot menu by pressing vol up. Select "install update.zip from SD Card" from the next menu. reboot after the install, and done. Don't freak out if it takes forever to get a 4G connection or certain things to respond. That's how it always is after updates.
Why 2233? Wouldn't you recommend 230 as it's the latest?