“I connected my iPhone 5 to Mac it started backing up immediately. The old backup file were overwritten and deleted, Now the only backup I can restore to is today’s, I realize it's too late now, I am wondering is there any way to backup iPhone 5 data without overwritten the old backup file?”
How to prevent iTunes making backups automatically?
In iTunes > Preferences > Devices > check Prevent iPods, iPhones, and iPads from syncing automatically
Actually, iTunes only keeps one normal backup per iOS device, when you synced you iPhone/iPad/iPod to iTunes, it will create a new backup files and replaced the old backup, Each iOS device only have a recent backup in iTunes.
If you want to save multiple backup file, you need a third party tool, Here recommend a professional iPhone data backup and recovery software, with this iPhone data backup tool, you can create a iPhone backup with date & time stamp, what’s more, you can also select to backup data rather than the whole iPhone backup.
Firstly, Free download the trial version of this iPhone data backup tool for Mac, if you are windows computer user, get iPhone data backup tool for windows and take the same operation as below. It’s very easy-to-use and works well with iPhone5S/5/5C/4S/4, etc.
