Originally Posted by cputrdoc
I got a little further -- noticing that several apps I installed before the last flash were still installed, I removed the SD card and used the HBOOT FACTORY RESET option to totally wipe the phone.
This time, when it was ready to install 4.08.605.15 it, properly rebooted, but I got the dreaded red triangle and exclamation point. After a battery pull and a reboot, I'm still using software 4.08.605.2.
UnrEVOked is still not working, though.
You don't need to go back to s-on to install the update. You only need the stock recovery, which you already have. The update itself is very glitchy, there is a lot users reporting problems trying to install it and most of them were never rooted.
For reference though, this is how you would get root back:
[How To] Regain Root With S-Off or HTC unlocked bootloader
, but all you need to do to get s-on is flash clockwork, install the s-on file, then install the stock recovery again. (I highly recommend you do NOT go back to s-on though)
Unrevoked is not needed since you are s-off.