It sounds like you have the virgin mobile version of the evo 3d, dubbed evo v 4g.
Is that correct?
Also your phone is s-off as it says and the patched hboot version shows. This is great news!
I'm confused when you say you have not rooted it? Did you get the phone second hand? It sounds like you also have a custom recovery.
You have two options:
-flash any stock based rom
-run the Ruu to return to stock
The ruu will remove root, custom bootloader, recovery, everything. I would recommend flashing the stock rom if you still have it on your sd card?
If not go here:
Goo.im Downloads - Browsing JmzStockRoms and grab the odex version.
You are on the virgin mobile version right? Just to be sure. And in the future, make a backup