Hi, I just got this TFT as well.
What I got working came from their website:
Use the V3.0 folder and copy the libraries into your arduino libraries.
For some reason, when using their examples, you'll see the line of identifier. That is used for what your lcd driver is, which in this case should be ILI9481 as told by their website. HOWEVER, none of their examples will work with ILI9481 identifier but will work with ILI 9341. I don't know why but it works.
Hope this helps.
EDIT: V3.0 folder -> Arduino Demo -> install libraries = all the libraries you'll need