#1. AT:
ECU Part No.:8631A860
S/W Part No.:8631A8600A
VIN No.: JA32Y6HV1AU003244

That's my TCU information that I needed for the website. 

The files need to be modified when you download them. 

AMT_17800000_000204_dio30_C.cbf (Same file for everyone)
TI_Info.tipart (Teach-In Files; Same for everyone)
8631B001_dio30.cff (TCU Flash File)
8631B001_dio30.flpart (Vehicle Specifice File)
ClearDiagCANID.ini (Same file for everyone) I used EvoScan. I like it better and it's faster.

#1. Open your specific .flpart file. 
<MMC_FlPart><PassThruCANFlash><NewPartInfo><NEW_HW _PNAME>8631A827</NEW_HW_PNAME><NEW_SW_PNAME>8631A8270B</NEW_SW_PNAME></NewPartInfo><CFF_FILENAME>8631B002_dio30</CFF_FILENAME><CBF_FILENAME>AMT_17800000_000204_dio 30_C</CBF_FILENAME><SYSTEM>TC-SST</SYSTEM><CONTENTS>Reprogramming data for Mechatronic Assy replacement of 10MY LANCER SPORTBACK</CONTENTS><DATE>2011.12.12</DATE><CLASS>Reprogramming for Teach-in</CLASS><ApplicablePartInfo><TARGET_HW_PNAME>8631A86 0</TARGET_HW_PNAME><TARGET_SW_PNAME>8631A8600A</TARGET_SW_PNAME></ApplicablePartInfo></PassThruCANFlash></MMC_FlPart>

Verify that the <TARGET_HW_PNAME> and <TARGET_SW_PNAME> matches the information you pulled from your TCU using the PassThruCAN Reader function. (This part of the script just tells the software what version H/W and S/W to expect when it tries to complete the flash.)

Now, you need to change the <NEW_HW_PNAME> and <NEW_SW_PNAME> to match which flash you will be putting on the car. Since I used yours **8631B001** and not mine I just looked up your H/W and S/W information. 

ECU Part No.:8631A827
S/W Part No.:8631A8270B

Cheat sheet:
CZ4A (Evolution) 
2008 8631A749.cff = 8631A3790C
2009 8631B001.cff = 8631A8270B
2010 8631B001.cff = 8631A8270B
2011 and Up 8631B151.cff = 8631A8270A

CY4A/CX4A (Ralliart)
2009 8631B002.cff = 8631A8600B
2009 8631B002.cff = 8631A8600B
2011 and Up 8631B002.cff = 8631A8600B

Now the last part is copy a clean copy of B631B001.cff into the proper directory and change it's name to reflect what the .flpart file is looking for. 

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You need to use the Pass-Thru CAN software to read your AT (TCU) file to figure out which files you need. 
My Information was:
ECU Part No.:8631A860
S/W Part No.:8631A8600A
VIN No.: JA(LOL)244

So, that told me that I had the file of 8631B0002.cff base off of a table that we found. Now the 8631A8600A is an older version of the .cff file. 

Current Versions:
CY4A/CX4A (Ralliart)
2009 8631B002.cff = 8631A8600B
2009 8631B002.cff = 8631A8600B
2011 and Up 8631B002.cff = 8631A8600B

Once I knew what version file I had, I chose which one I wanted to flash. I choose 8631B001.cff on the Evolution X. 

Current Versions:
CZ4A (Evolution) 
2008 8631A749.cff = 8631A3790C
2009 8631B001.cff = 8631A8270B
2010 8631B001.cff = 8631A8270B
2011 and Up 8631B151.cff = 8631A8270A

When you are on the website you have to tell it which version you have. My information to the site was. 

CX4A (Ralliart Sportback)
H/W :8631A860
S/W :8631A8600A

The website provided me with the files to upgrade from 8631A8600A to 8631A8600B which was 8631B002_dio30.cff , it also provided me with the file to format everything 8631B002_dio30.flpart. 

So, with my information I got the following files for download:
8631A860_JA(LOL)244_20090720_436.vcpart
8631A860_JA(LOL)244_20090720_436.kon
AMT_17800000_000204_dio30_C.cbf
TI_Info.tipart
8631B002_dio30.cff
8631B002_dio30.flpart
ClearDiagCANID.ini

Those files allowed me to upgrade to the 8631A8600B version if I wanted to. 

Open the .flpart file and you will see the code. 
(Attachment)

The Yellow is the current TCU information
The Green will be the new version TCU information
The Teal is the .cff file to be flashed
The Grey is the stock file that everyone needed.

Now for the fun part. Let's say I want to change my TCU to a new version. Let's say 8631B001.cff which is the 2009-2010 Evolution.

First, I would need a copy of that file. That can be done multiple ways. First, just lie to the website. Instead of putting in your full information, try telling it that you already have an Lancer Evolution flashed TCU. 

Like so:
CX4A (Ralliart Sportback)
H/W :8631A827
S/W :8631A8270A

Now the site will provide you with some different files. 
8631A860_JA(LOL)244_20090720_436.vcpart
8631A860_JA(LOL)244_20090720_436.kon
AMT_17800000_000204_dio30_C.cbf
TI_Info.tipart
8631B001_dio30.cff
8631B001_dio30.flpart
ClearDiagCANID.ini
(Only the .cff and .flpart files actually changed)

Open the .flpart file and you will see the code. 
(Attachment2)

Now if you look at the .flpart file it has changed. 

The Yellow needs to be changed to the correct TCU information
The Green will be the new version TCU information
The Teal is the .cff file to be flashed
The Grey is the stock file that everyone needed.

But, now you have all the files needed to flash to the EvoX TCU flash. 

**Warning, mine sometimes gets to 99% and said it failed**
Don't worry, turn the car off and back on and then clear the DTC's and proceed you are done.