[Beginner Tutorial] How to Decompress Zelda OoT ROM for Editing.

By MelonSpeedruns on 2014-06-26 02:22:59 Direct link
Hello there! I'm Melon and today, we're going to decompress Zelda OOT Rom for being able to change values in the game.

First, you're going to need some softwares.
You will need a Hex editor for change the values.
I suggest you HxD which is also the one I'll use myself.
You can download it at : http://tinyurl.com/5fxpbl
Next, you're going to need the 1.0 NTSC ROM of OOT.
You can download it at : http://tinyurl.com/q4f8wtw

We're going to decompress the ROM you just downloaded.
This will allow us to change the values inside the ROM.

To do this, download Zdec at this link : http://www.mediafire.com/download/jd8g3lit4c7tcm2/ext.rar

You will need WinRar for open the .rar file.
You can download WinRar at the following address : http://www.rarlab.com/download.htm

Open the downloaded .rar file with WinRar.

Extract the folder to a place that you will remember. (Like your Desktop)

After that, open Notepad.

Copy this code and paste it in.


Save the file as "RUN.bat" in the folder you just extracted.

Now, take the Zelda OOT Rom and put it in the extracted folder.
Rename the ROM as : "ZELOOTROM.z64"
After that, Double Click on "RUN.bat"
Press "Y" and then "Enter" when asked on your keyboard. (Not on your controller :P)
After that, a new file has been created in your extracted folder called : "ZELOOTROMDEC.z64"

This file is our decompressed Rom. You can try to open it in your favorite emulator and it works! So, i'm not going to tell you how to change values. If you want to, please ask someone else. I'm not good at this :P.

So, thank you for being here and... goodbye!