Restored wrong backup thru iTunes

Hi,

I have this iPhone 5s with no iCloud account on it. I removed it because I was going to sell it.

Earlier today, I was trying to restore backup from my previous iPhones but I clicked on the wrong backup. Now, I have backup from an iPhone4s with photos/musics/videos including wrong iCloud account. I cannot change icloud account, I cannot reverse the backup. I have previous backup for this iPhone 5s in my computer. The one with no iCloud account on it...

How do I restore the backup I have for this iPhone 5s with no iCloud account on it? I can provide all details of both phones... iPhone4s and the iPhone5s. The 4s belongs to a friend of mine. Something wrong with the network signal. I did the backup for the iphone 4s back in October. On the iphone 5s, I also have backup for it. As of now, my friend told me he forgot password for his iPhone 4s. So his 4s is sitting on my desk doing nothing. Still working but no network signal.

Please, I need my iPhone 5s back. It's locked to iPhone 4s backup with iCloud account.

Thanks!