I've found a useful tutorial within this forum so I can restore settings from a 4.0 backup to a recently downgraded iPhone (3.1.3).

I did edit info.plist to match the new OS version and build, the restore works, but just the apps, no contacts, no sms, no settings... ((

This happened in two different computers and two different iPhones.

As you already noticed I am from Spain, so the software (iTunes) I've used is in Spanish (one Windows XP and Windows 7).

Of course I don't want to update to iOS 4.0 again to have all the data back.

Any idea???

Nice community you have here, thanks in advance.

Horse Renoir.