We’ve made a lot of articles related to patching ROM hack files. There are those that come in IPS, UPS, BPS, and others.
A lot of the patches that we have are for Windows and Android (See related topics below).
The question is, what about the macOS?
Don’t worry, because this will be your guide on how to patch ROM hacks on Mac using MultiPatch.
First off, you’ll need a couple of things, but don’t worry because we’ll guide you with all the necessary steps. That way, you can patch your ROM hack files and play them on your Mac.
We’ll also include other instructions and other data that you might need when it comes to the entire process.
- Patch a BPS File
- Using a Lunar Patcher to Patch IPS files
- NUPS Patcher and ROM Patcher JS
- How to Use Floating IPS to Patch a ROM Hack
- How to Use Tsukuyomi UPS Patcher to Patch a GBA ROM Hack
- How to Patch a ROM Hack using NUPS for PC
- How to Patch IPS and UPS Files on Android Using UniPatcher
Editor’s Update (January 2025): Rejoice, Mac s! You can now enjoy the best Pokemon ROM hacks around by using our complete tutorial for using MultiPatch.

Table of Contents
Requirements to Use MultiPatch:
1. The ROM Hack File
The first thing that you’ll need is the Pokemon Unbound ROM hack.
This file comes in the UPS format and it is already unzipped from being a RAR file. You can easily do that on your Mac so make sure that the ROM hack file is a UPS, IPS, or BPS.
2. The Base ROM
The Base ROM is what we’ll use for the ROM hack to be patched on. Pokemon Unbound’s base ROM is Pokemon FireRed. That means you’ll need to have copy of FireRed, which would already be in a GBA format.
Be sure to find out which base game is for which ROM hack. The others would be LeafGreen, Sapphire, Ruby, or Emerald. The other thing is that a specific version of the ROM may be required.
3. The MultiPatch App
When you want to know how to patch ROM hacks on Mac using MultiPatch, then you need the app.
The MultiPatch is the app or program that will be used to patch the ROMs. When you don’t have one, you can easily it online for your Mac.
4. See This Tutorial in Action
We have created a video version of this tutorial for readers who wish to learn the process in a video form:
How to Patch ROM Hacks on Mac Using MultiPatch
Now that you have all three of those requirements, here are the steps to it:
Step 1: Launch the Multipatch App

Step 2: Click on Browse on Location of Patch File

Step 3: Choose the ROM Hack File (Pokemon Unbound in UPS Format)

Then, click Open.
Step 4: Click on Browse on Location of File to Patch

Step 5: Choose the Base ROM File (Pokemon FireRed in GBA Format)

Then, click on Open.
Step 6: Click on Browse on Save Patched File As

Step 7: Save the Newly Patched Filed With Any Name That You Want

Step 8: Click on Apply Patch

Step 9: Wait for the Process to Finish and Click on Ok When It’s Done

Step 10: Your Newly Patched File Should Appear in Your Files Right Now

Step 11: Launch the Newly Patched ROM Hack to See if It Now Works and You’re Done

In Closing
Now that you know how to patch ROM hacks on Mac using MultiPatch, you can finally start ing, patching, and playing ROM hacks on your emulator of choice!
If the patch doesn’t work, there are three possible reasons;
- Wrong base ROM used
- The ROM hack requires a specific base rom version (some requires v1.0)
- Faulty rom hack file – Could be the outdated
Take note: When patching fails and if the base ROM is correct, then the version of the ROM itself might also be the problem.
There are ROMs that have different versions so be sure to check the right one you would need to use.