Transfer whatsapp and sms from IOS 7 to IOS 6 iphone 5?

I recently updated my phone to the iOS 7 beta. When i connected my phone to my itunes and tried to restore it back to 6.1.4 it worked fine, but the backup file wouldn't restore on my phone again.

I searched online and it says that my files can't be used on a lower iOS version. So basically i'm screwed!

i'm not really fussed about game data or any settings that were saved on my phone, they are all backed up. But i really want my sms, whatsapp and pictures back on my phone!

Is there any software available that will help me extract those files from my phone and put them back onto the phone again once i restore back to 6.1.4.

I really appreciate the help! Thank you

Added (1). I have a mac. So please suggest software that can be used on macs.

I experienced the same problem once. I can't help much because i can't remember the details very clearly, but I know you can locate the backup on your Mac in your library folder somewhere (mobilesync, i think). You can then edit a plist file so you can use it on older ios versions. I don't know how safe this will be with ios 7 to ios 6 because they are completely different. But i hope i've given a vague idea of what to do. Good luck!

EDIT: Just another thought, go back to iOS 7 and restore from backup. Then backup your Whatsapp data, I think they give you that option, but you can also just email yourself the conversations if they don't. Return to iOS 6.1.3 and start fresh; you can restore your conversations if you were able to back them up, otherwise you'll have them stored as an email which is good enough, I hope. Only do this if Whatsapp data is really important to you, because you will be at your computer for some time to do this. It's funny, because I delete my Whatsapp messages as soon as I've read them! Hope I've helped.

For SMS, you can use Mac version Backuptrans iPhone SMS Backup & Restore to help.

Well, AnyMP4 iPhone Transfer software may be help you solve this problem.