@gokun, you probably need to make sure you have a stock recovery and a relocked bootloader to receive that update. I'm pretty sure that's how the process goes even if you have a stock Rom.
Sent from my HTC One X+
Yeah, you are correct. I ended up not doing it because I didn't want to update my hboot just yet. Instead I just installed a custom rom based on it(blackout). That option worked out better for me since I didn't want to go through all the headache.
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