Finally some good news for all Windows Phone users who either keep flashing or switching roms or have accidentally deleted SMS or you are switching to brand new Windows Phone and want to restore back.
A SMS Backup tool came out recently and used to backup all your SMS to Skydrive or on your phone can now also restore all your SMS provided your phone is at least Dev / Chevron unlocked starting from version 0.4.
More details at WPXBox and also check the following video