Originally Posted by kanketsu
It looks like there are several degrees of applying the fix; the result also seem to vary depending on which version of FFXIII-2 that you have.
1. Applying only the fix eboot.
It is believed that doing this will be enough for the Duplex version to work a.k.a. won't freeze at chapter 3. It is said that this will not be enough to patch the other version.
2. Applying the missing SPRX.
Do this after you've done  but the problem persists.
2'. Applying SPRX files from TB release.
I read one post that said that copying SPRX files from the TB release will solve the problem.
3. Applying many, many files.
See http://bbs.duowan.com/thread-27877501-1-1.html for further info (in Chinese, unfortunately). There are about 30+ files, and some are quite big (1GB++)Do this after you've done  but the problem persists.
Apparently you need to go all the way with 3 if you have the Multi-Asia version. Extra effort for the "undub" route ...
Nice, I like the synopsis, should be helpful to others too.
You mention the Duplex (EU) version and the Multi-Asia version, but isn't there a US version too?