Note: if you are looking to patch free to play games, this app is probably NOT for you.
ROM Patcher is a ROM/binary file patcher that supports IPS, IPS32, UPS, BPS, PPF, XDELTA1, XDELTA3, DPS, ASM, XPC, DLDI, APS (both GBA and N64), and BSDIFF patch types. It also supports decompressing ECM files via unecm. Simply choose a file to patch, the patch itself, and optionally an output file name and tap "Patch". Best of all, the app is completely free with no limitations. Can be used with video game ROMs/ISOs (NOT for apps/F2P games) to add new levels, translations, cheats and more, or any other files that a patch exists for. No ROMs, ISOs or patches are included. All requests for ROMs and ISOs will be ignored. This app uses components from MultiPatch for Mac which is licensed under GPL. The source is available if desired. This app is the first open source ROM patcher to support IPS32 patches.
Consider purchasing the paid version of ROM Patcher to support future development or if you need personal support: https://play.google.com/store/apps/details?id=com.xperia64.rompatcher.donation
Recognized file extensions:
APS type patch: .aps
ASM type patch: .asm
BPS type patch: .bps
BSDIFF type patch: .bsdiff
DLDI type patch: .dldi
DPS type patch: .dps
ECM compressed file: .ecm
IPS type patch: .ips
IPS32 type patch: .ips
PPF type patch: .ppf
UPS type patch: .ups
XDELTA1 type patch: .xdelta, .patch
XDELTA3 type patch: .xdelta, .xdelta3, .vcdiff
XPC type patch: .xpc
Q: How do I hack ?
A: This app is not intended to modify apps, only ROMs or ISOs. You cannot 'hack' CoC or Shadow Fight 2 unless you provide the patch.
Q: Pokemon Glazed
A: Check the "Ignore checksum" checkbox
Q: I cannot install/update the app
A: This is an issue with Google Play of your device at the moment, not this app
Q: The patch doesn't work
A: Make sure the ROM is correct, untrimmed, and all files are unzipped/unrar'd/un7z'd
Q: The patched ROM doesn't work in _______
A: Contact the author of that app, not me. There is no guarantee the patched ROM will work with any third party apps. ROM Patcher only applies a patch to a file. If you provide an incorrect ROM or patch, any errors that may occur are not the fault of ROM Patcher.
Q: There is no file extension!
A: If you cannot rename a file, you probably shouldn't be using this app
Q: My ROM/patch wont show up
A: Ensure you know where the files actually are. Also, make sure the patch file extension matches one of the ones listed above and you are not trying to patch a patch file.
2.11: Support XPC files ('ask' not supported)
2.10: Support GBA APS Patches
2.9.1: Output file/dialog bugfixes
2.9: Support APS patches
2.8: Support DLDI patches
2.7: Support SNES ASM patches, add fast scrollbar in file browser
2.6.2: Show extension-less files when selecting a file to patch
2.6.1: Attempt to fix rare crash on some devices
2.6: Add XDELTA1 support, fix a couple of bugs
2.5: Add dpspatcher for DPS patch files