
2. Find the file that contains a metadata.json, two shaders, and a .mathnodes file.

3. Click on the metadata.json and open the text editor tab.

4. Download Notepad++ and paste all the text from the text editor into it. Then Scroll to the bottom.

5. Delete the brackets that are highlighted in red in the image below.

The text should then look like this:

6. Save as metadata.json anywhere.
7. Back in the 2K15 Explorer, sort the iff by size and export the largest GZIP LZMA.

8. Download Blender 2.71 (No other version is officially supported). Then extract it.
9. Place the nba2k_tools file into the Blender directory

10. Open Blender, and go to File>User Preferences, or press Ctrl+Alt+U
11. Click "install from file" at the bottom of user preferences.

12. Install models_2k.py
13. With your mouse over the viewport, press N. Then open the shading panel, and then change multitexture to GLSL.

Then press N again, since you won't need that open anymore.
14. Open the scene tab on the right side. Should look like this:

Now you can import the model using the file you exported and the file you saved with Notepad++.
Once you've imported a model, you're gonna want to add textures. Here's how. (Also, this isn't a beginner tutorial, so from this point on, you're going to have to have SOME understanding of Blender already.)
1. Go into edit mode with textures, and deselect all.
2. Go to the object data tab on the right panel and select any part. Doesn't matter which, even if you don't wanna add a texture to this part.

3. Open the material tab, click "New" and then click "Assign".

4. Go back to the object data tab, deselect all vertices and then select the vertex group you want to add a texture to.
5. Go back to the materials tab and click the "+" button to the right of the list of materials, and then click "New" and "Assign".
6. In the shading panel, tick the "shadeless" box.

7. Open the texture tab.

8. Click "New" and make your panels look like this:

9. Select an image

and that's it! To add more textures, just start at step 4 again.
Q&A:
Q. Why does my face texture covered in white?
A. It's because of the alpha. To fix this, just untick the "use alpha" box in the image panel inside the texture tab.
Q. How do I make beards transparent?
A. In the materials tab, tick the "Transparency" panel and drag "alpha" all the way to 0.000. Then, in the texture tab, in the "Influence" panel, tick alpha and keep it at 1.000.
Q. The beard is all pixelated and bad looking in the viewport. How do I fix this?
A. This one's easy. Just change from texture mode to rendered mode. Now it should be nice and pretty like in game.
Q. The textures don't look like they do in game. Is there a solution to this?
A. 2K15 re-colors all the textures in game, so the only fix is to re-color the textures specifically for use with Blender for previews.
Q. How do I make the unwanted vertexes disappear?
A. Select all the vertexes you don't want you don't want. Then just make a new material, tick the transparency box, and put alpha all the way down to zero. Then just press assign and everything you selected is gone.
Any other questions, feel free to ask below.