I'm helping my friends with a PSP translation project but everyone in our team is a noob when it comes to PSP patching. T_T So I'm looking for a convenient and easy way to create/apply a translation patch, something that's easy for me to make a patch, and easy for my friends to apply the patch to their ISO file. For the current game I'm working, there are only 2 files that need to be changed. One decrypted Eboot.bin (about 4 MB) and one decrypted PGDfile (about 300 MB). The original ISO is about 1.7 GB and the modified ISO is pretty much about the same size. I tried creating a patch with XdeltaUI but the xdelta patch itself is 1.4 GB. So I think xdelta is not the best choice here. (Plus it took so long to make a patch and it'll be a pain to upload the patch. And it is still a beta patch, so we'll have to upload/download many revisions of it.) Should I ask my friends to download UMDGen and then I upload the new Eboot and PGD files for them instead? Or are there any other ways I should try? P.S. Is uploading Eboot and PGD files okay on most game forum like GBATemp? P.S. 2 How likely is it that a modified ISO that works on PSP emulators won't work on the real PSP? (I don't have a PSP and I'm using JPCSP and PPSSPP to test the translation patch.) Thank you very much. EDITED: Found the method Cyan suggested in this reply to work best for me. So, problem solved. Thanks so much.