The hijack file is under the recovery folder in system/preinstall
Battery pull a couple times, see if custom recovery pops up
And you did delete the bootstrap logwrapper and rename logwrapper.bin to logwrapper, right?
If all those are done, and clockwork's gone, I think that's it.
There's an adb way but I have no clue how to run that (tried once, computer...refused)
EDIT: There's another logwrapper under preinstall/recovery, I think that has to go aswell, not sure
Just wait, try the update without deleting that one, if it fails, delete it, give it another take
I'm out for the night now, exams...