How to patch a ROM on Android
On Android, open the patcher in Chrome, select your ROM and patch through the file picker, and tap Apply patch. The patched ROM saves to your Downloads folder, ready to load in RetroArch, Delta or any other emulator.
How to patch a ROM on an Android phone
Open the patcher in Chrome
Go to ezrompatcher.com. Nothing to install.
Select your ROM
Tap the ROM field and pick the file through the Android file picker.
Select the patch
Tap the patch field and pick the patch or the zip containing it.
Apply and save
Tap Apply patch. The patched ROM downloads to your Downloads folder.
Load it in an emulator
Point RetroArch or your emulator of choice at the patched file.
Patching on Android, step by step
Android’s file handling is more flexible than iOS, so this is straightforward. Chrome’s file picker reaches your whole storage, including SD cards, and downloads land in a folder any emulator can read.
Firefox and Samsung Internet work as well. Anything based on a current browser engine is fine.
Dealing with archives on Android
Zip files can go straight into the patcher. For .rar or .7z, use a file manager such as ZArchiver to extract first, since the patcher handles zip only.
Where to load the patched ROM
- RetroArch covers nearly every system through its core system.
- Delta for Nintendo consoles.
- Dolphin for GameCube and Wii, though those files are usually too large to patch comfortably on a phone.
Frequently asked questions
Do I need an app to patch a ROM on Android?
No. The patcher is a web page that does its work locally in Chrome. There is nothing to install and no permissions to grant beyond picking a file.
Where do patched ROMs save on Android?
To your Downloads folder, the same place any browser download goes. Emulators like RetroArch can browse there directly.
Can I patch a PS1 disc image on my phone?
Sometimes, but memory is tight. A 700 MB image needs the original and the patched copy in RAM at once. If the tab reloads, that is why. Use a computer for large disc images.