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.
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.