Originally Posted by Alexrietveld
Some of you guys are missing the point. Its not simply 'changing the names' of teams in edit mode. From what I've read the patch makers suggest a data transfer kit so that you can put the patch into your system or that they send a memory card to you with the option file, which you would then load from.
I have no idea whether this is against the rules, it sounds too risky for me to try it out. I too would like to know a definitive answer though as I always am amazed at the screenshots from those fan made patches...
I installed an option file taken from pesfan.com, think the guy was called "Dragon Skin" or similar - I have unlocked several achievements, and had no online problems since installing the option file.
It would appear to not cause any issue, but I can't guarentee 100%