“I updated my iPhone 6 with iOS 10 several days again, but it doesn’t work well on my iPhone. So i want my iPhone back to iOS 9.3.5, because people said it’s workable to downgrade iOS 10 to iOS 9.3.5. Anyone can help me? I haven’t done those kind of things before. Any advice about downgrading iOS 10 to iOS 9.3.5 will be appreciated.”
Well, iOS 9.3.5 is signed by Apple, so you can still downgrade your iOS 10 to iOS 9.3.5, but before doing downgrade, you’ll need to do backup. Otherwise, you maybe suffer the permanent data loss. Please notice.
Downgrade iOS 10 to iOS 9.3.5
Now we can downgrade iOS 10 to iOS 9.3.5 with your iTunes on PC.
Step 1. Backup your iPhone data, you can use iTunes, iCloud or iRefone for help.
Step 2. Download iOS 9.3.5 IPSW file from Apple support for your iPhone and store it on your PC that you can find it easily.
Step 3. Launching iTunes on your PC, connect your iPhone with PC.
Step 4. Select iPhone icon on your iTunes, then we’ll be in Summary section.
For Mac: click Option + “Restore” button.
For Windows: click Shift + “Restore” button.
Step 5. Go to iOS 9.3.5 IPSW files you have save in your PC, and choose to restore. Then iTunes will notify you that your data will be erased and restore to iOS 9.3.5. It means you’ll lose your iPhone data during downgrade.
You can also upgrade your iPhone to iOS 10 after downgrade to iOS 9.3.5.
Remark: when you lost some of your iPhone data during downgrade to iOS 9.3.5, you can use iRefone to help you retrieve them back without any backup.
iRefone is a professional iOS data recovery software, it can recover more than 16 kinds of files, like contacts, notes, messages, photos, WeChat contacts, reminders, WhatsApp messages ect. Also it supports restore them selectively.
When you need, you can download and install the free trail version to have a try.
For detailed steps, you can refer to below article:
Recover deleted WhatsApp messages without backup
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