hi guys , i need some help here. I'm having a 3G & previously upgraded to OS4 & regretted all the way. recently found a way to downgrade the phone back to 3.13 but Itunes just don't allow the backup restore of all my data previously backup in OS4 which unfortunately IS the only i'm having.

Question : is there any way to bypass version check or force restore of my backup previously done in OS 4 without having to upgrade my device back to OS 4? ...PLS HELPPP....