How to Fix 3uTools Error Unable to Restore iDevice [-1] or Error 20%.
Ensure your apple device has enough charge.
Download iOS for your iPhone model.
Download latest iTunes for your PC.
Follow the video instructions.
Check Details here
Unplug the iPhone from USB and plug again.
Check battery percentage.
This solution includes these Apple product below:
Learn How to download and install 3uTools here
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iPhone 12
iPhone 12 mini
iPhone 12 Pro
iPhone 12 Pro Max
iPhone 11
iPhone 11 Pro
iPhone 11 Pro Max
iPhone XS
iPhone XS Max
iPhone XR
iPhone X
iPhone 8
iPhone 8 Plus
iPhone 7
iPhone 7 Plus
iPhone 6s
iPhone 6s Plus
iPhone SE (1st generation)
iPhone SE (2nd generation)
iPod touch (7th generation)
iPad Pro 12.9-inch (4th generation)
iPad Pro 11-inch (2nd generation)
iPad Pro 12.9-inch (3rd generation)
iPad Pro 11-inch (1st generation)
iPad Pro 12.9-inch (2nd generation)
iPad Pro 12.9-inch (1st generation)
iPad Pro 10.5-inch
iPad Pro 9.7-inch
iPad (7th generation)
iPad (6th generation)
iPad (5th generation)
#iOS15.4 #iTunesFlash #iPhoneUpgrade
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iPad mini (5th generation)
iPad mini 4
iPad Air (3rd generation)
iPad Air 2
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