Final Fantasy IV : The complete collection

[qhuy2401]

I'm using ppsspp 0v0.8.1-699-gb17b20 on iPhone 3GS 5.1.1 Jailbroken, the FF4 iso was ULUS-10560. When I enter a save point and then use the "save" function, or when I access "Select Story" and "Load Game" from the main menu, it tells me to create new save data:

Quote:System data could not be read.
You need at least 224 KB of free space to create system data. Would you like to create it now?

So I pressed "Yes", but it keep on popping up again and said the same thing. Then I pressed "No", there was an error code 80110327 appear, but I could by pass that, and choose a slot to save. But I waited for age and the "saving..." screen still there.
I checked the permission of var/mobile/documents/psp and the folders beyond it (SAVEDATA and PSP_STASH, I guess) with iFile, and they are all readable, writable, execuatable... All permissions granted. But still I cannot save. Tried changing the "EcryptedSave" to "False" in psp.ini which is located at var/mobile/Documents, and that didn't help.
I can continue the game now with save states, but that is only a temporary solution, since when I have reached the end of Ceodore's chapter, the game would like me to save, so that it could import my save for the next chapters (The Crystals and Kain's)
Is this a common/long-aged problem with iOS version or I just got bad luck?
Edit: my mistake, the FAQ said that it needs iOS 6 to run the program perfectly, guess that somehow cause the error for me.