1.install both Books.app and SwirlyMMS from Installer.
Make sure both work well. You’d better download at least one book and one piece of MMS to check if they can func as expected. If you can’t, then you have to manually create the regarding folders.
2.enter command line by either Term-v100 on your iphone or Putty on your compute. You know how to do it, do you?
3.run the following command one by one(case sensitive):
ln -s /var/mobile/Media/MMSFiles MMS
So, now you can see basically the whole point is to fool the Books.app by a fake ‘book link’ which actually is where the MMS files are saved. One of the good thing is, now i can read Chinese MMS while i can’t in MobileText.app. Also, i can delete the obsolete MMS files easily by the Books.app’s Delete function.
So, SwirlyMMS.app + Books.app = A Full MMS.app, not bad, huh 😉
Source: 关于SwirlyMMS的使用问题的分析–先谈乱码的解决 【原创】