No man, this is a full rom. It is just stripped down and has been the best rom I've ever flashed
YouTube search this video it will explain alot -----
"Install the fastest rom on the thunderbolt the easier way"
But I'm definitely not saying to pay to have it put on your phone because I think if you want it on your phone you should know how to put in on yourself, ya know in case you have issues or whatever may come up.
Other than that the only thing I can say is make sure you wipe absolutely everything before flashing, that usually takes care of any stuck splash screens I've ran into.
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