I'm already rooted and unlocked, so how do I update?
First and foremost, before you do so making it clear that from what I know you won't be able to rollback to GB.
Download and MD5 check the leak.
Re-lock.
Run the PH98IMG from your external SD card to allow updating of HBOOT.
Once that is done, power off, pull battery OR if it appears frozen/hardlocked let it sit for ~ 3 mins and pull battery.
Power on to HBoot again and allow PH98IMG.zip run a second time to allow the rest of the update to take.
Factory reset.
Power up and load fully.
If you don't wish to keep stock after you have done the above:
Re-unlock(is this a word?)
HBOOT flash an AmonRA PH98IMG.zip image(I am unsure if you can fastboot flash a custom recovery with the new HBOOT)
Choose a rom or pre-rooted zip and flash with your normal wipes.
Mind you if you flash a custom recovery, HBOOT will show **Tampered** it is normal.
OH FORGOT TO MENTION MAKE SURE YOU ARE UNPLUGGED FROM ANY USB/CHARGING SOURCE AND HAVE A FULLY CHARGED BATTERY! THIS INCLUDES BEING DISCONNECTED FROM A PC/MAC!