mobile

I believe I'm partly rooted (I will check other threads on that topic). I was going to install a 64 GB SD Card after fully rooting the phone. How is the SD card related to rooting--is there a proper sequence to use?

(Text from my previous question copied below, in case it gives context)

Summary: Started root, didn't complete it (?), then update downloaded.

I began root process last night--my first try--using Towelroot. When I pressed the "Make it Rain" button, I got an error message that my device was not supported (I don't recall the exact words). Using Android 4.4.4.

I've not found a way to continue this, although I see some alternate methods in another thread.

What is apparently going to be a 2-hour over Wifi update from AT&T, is in process. Are there any problems regarding this and proceeding with the root process?