Originally Posted by ILowry282
So if I update that way will I lose my data and root? Also do I unzip the file or flash the zip file?
The first part of the reply above is certainly correct, (the rest is also, but I'm just speaking to the first part of it) but I feel it is just going to confuse you.
You did not flash a custom ROM, you flashed a custom RECOVERY. Two different things. When you copy the update onto your phone, in the form that exists in the thread I linked earlier, it is not an entire image. It is an UPDATE to the stock image, which you are already using. As for your concern of losing root, it shouldn't be a concern. As was mentioned in the reply above mentioned, while you are in recovery you can simply just flash SU again.
In fact, I'd be willing to bet the file to flash SU is [b]still on your phone[b].
As for me personally, I happened to have unlocked the pro version of SU (because why not...it's only $2.50 and I like the app) and just toggled the "survival mode" option. But even if I had not, it would have been a very small thing to loading SU again.
In short, don't worry about losing root. When you first rooted this phone, most of the steps involved were not in rooting the phone, but in unlocking the bootloader. Loading this update has nothing to do with that, so in your case, since you didn't flash a custom ROM (Such as CyanogenMod) and you didn't make any modifications to the system apps...quite literally all you have to do is copy the stuff onto your phone, load into TWRP, fire up the update, and either fire up SU, or have survival mode already enabled, and reboot the phone.
(and no, you don't have to unzip the file pasted in the thread, just copy it directly) The instructions in that thread are really simple, and that's probably giving you a bit of pause, but seriously, it really is that simple in your case, as it was mine.