I forget if you need the 68 skill, Umbral Hearts, to perform the 4.0 AF rotation but it goes F3>F4>F4>F4>F1>F4>F4>F4. At 70, your UI will go B3>Foul>T3>B4.

There have been a lot of posts popping up explaining how the 3.0 rotation, F4>F4>F1>F4>F4, is better though. I suggest you use the 3.0 rotation for now until we find out what 4.05 will bring to the table for BLMs.