I currently have 893, but discovered I am not actually rooted anymore and I don't know when I lost it. Maybe with the 893 update a while ago. So what should I do now? Do I have to go back to pre-893? If so, how do I know which one to go back to?
The .893 update can be rooted with any of the regular rooting tools. If you gain root and apply the forever root edits, you will keep root. If you are on the 5.5.893 update, you can take the OTA .902 update and still keep root.
I just tried to "re-root" using to different methods (Pete's and the "new method") and neither worked. So, I assume I must return to my pre-rooted version before I can "re-root". Is that right?