I had this infamous issue where I was stuck with my phone unable to boot for 2 days. I documented everything I learnt so others might find it helpful and as usual, it’s on XDA for all nicey goodness :)
You would want to read this post either because you have already seen this issue and want a fix or haven’t seen the issue yet and want to avoid it. This tutorial has information on how to fix the bootloader Security Warning issue and how to avoid it.
http://forum.xda-developers.com/showpost.php?p=16684717&postcount=38
My htc incredible s is not work.Bootloader is missing,how to start booting,How to rewrite bootloader ? Help me!………………
My htc incredible s missing bootloader,don’t not startet boot as power on!help me