I've tried several times. I installed the extensions, followed the tutorials step by step, it just won't work for me. Anybody who can convert these models will be my hero(es).

http://fav.me/ddz6b21
http://fav.me/ddz873y
http://fav.me/dd3viwy

I assume you have the latest mmd-tools, if so you should be able to press the convert model button on the side panel after press N. I tried to convert the first model, It works but many of the bones are missing weight, you need to delete the ones without weight, then rename all the proper ones to japanese equivalent. You can look at some generic miku model for reference. Also the texures can also be exported from the file menu top left in Blender. http://tstorage.info/hkioc95ll67v

With all due respect... what part of did you not get?

aint gonna do shit about "With all due respect... what part of " since it was fine.

I have a question though, u said you tried several extensions, so may i ask the question where it failed? was it exporting? adding the extension? crashes?
We need more context if you want us to help you.

Crashing is the one problem I haven't had. I can't save anything as a PMX. The option never appears and I can't find the tools.

I'm looking for someone to help convert model too.
I installed the plug-in but the bone of that model is specific blender bone.
I hope someone could transfer it into MMD model.

https://download.blender.org/release/Blender2.72/


Dowloand the 2.72b depending on your system 32 or 64 install the pmx tool. To convert Blender files from 2.8 more you need to install that blender after converting XPS then imported the XPS to 2.72 and convert to PMX. If you leave error when Import the XPS at 2.72 you have to open the XPS in the Blender 2.8 and turn it again on XPS then this new file import it to 2.72 and convert it to PMX.

1. Open the default "layout" on the top, you should see the 3d model. If it's not there just press the plus sign to add it.
2. Change the mode to "object mode" (top left of 3d view).
3. Select the armature of the model (right panel). This is the one that doesn't say pose. If you selected it and it stays on object mode, then it's correct.
4. Hit the letter n. Now a panel should open in the right side of the 3d view.
5. Open the "MMD" panel. The letters are written vertically.
6. Press the "Convert model" button, then "ok".
7. Right under, press "Attach Meshes to Model"
8. Left click in the 3d view, then hit a. It should select everything.
9. Now export the model as usual, in .pmx format. If it's only a Blend file, you should also export the textures under "File", "External Data" then "Unpack all into files". Put them in a new folder with the pmx file.

Now you should be able to open the model in pmx editor. The hardest and longest part is renaming the bones. I usually just open a generic miku model. Use the W tool to figure out which bones have weight, then match that same bone name to the exported model. After every bone have the same japanese name, I save the exported model. I then delete all the materials from the miku model and import the exported model, with merge bones checked. Then I just reposition the bones to the correct place on the model.

There is probably some easier way of doing this, but this is what has worked for me. Let me know if my way is a waste of time.