not having the supre su file wont keep you from booting. nothing in the unlock process will.
i cant watch your video at the momnet,but if youve tried to flash a rom,the most common cause for not booting,is that the boot image wsant changed,resulting in an incompatible kernel.
youll need to give us some more info on what you did/didnt do,or i will watch your video later this evening.
The Delivery Guy
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