The Incredible 2 cannot be rooted from 2.3.4 Gingerbread, however from 2.3.3 it can. The first step is to take your Incredible back to a 2.3.3. OS.
Roll it back
This can be accomplished through a tool called Downgrade VivoW with hboot .98. I don
Roll it back
This can be accomplished through a tool called Downgrade VivoW with hboot .98. I don