Help! How To Properly Put Normal Map In .IFF

Having trouble importing a 3dc Normal map into a cyberface. Need a step by step on how to do it.

So nobody knows how to?

All you need to do is replace the face detail normal really. You could replace all the normal maps but this isnt 2k14 which only had 1 normal map for each face.

Just use the nvidia normal map options in photoshop. Do not make the normal texture green. Leave it as is. Save as dxt 5 with 11 mipmaps and replace the face detail normal.dds file.