iphone 6s back up issue
I backed up my iPhone 6s to iTunes on 8/25 however when I choose to restore the phone in I tunes I do not have the option for this restore point , I have windows 8 on my hard drive I backed up 59 gig from the phone, I can see the files on my drive but do not know how to get them back into iTunes to restore to my new phone, the only restore points in I tunes are later dates without my information , I know the files are still on my drive as I can see the drive storage has them , is there any software or something I can do to put the files back in iTunes or to the phone?
iPhone 6s