Apple has recently released the newest iOS 10.3 Firmware for iPhone, iPad and iPod touch smartphone and tablet devices at Worldwide Developer Conference (WWDC) 2016. So if you're one of those iOS-user who has recently upgraded to iOS 10.3 from iOS 10.2.1 firmware version, and now wants to downgrade iOS 10.3 to iOS 10.2.1 update due to lack of interest and bugs you're facing on latest iOS 10.x.x Update, then you can follow our step-by-step guide, method and tutorial to Downgrade to iOS 10.2.1 from iOS 10.3 with iTunes for free on iPhone 7 Plus, iPhone 7, iPhone 6S, iPhone 6S Plus, iPhone 6, iPhone 6 Plus, iPhone SE, iPhone 5S, iPhone 5C, iPhone 5, iPad Pro (12.9-inch / 9.7-inch), iPad Air 2, iPad Air, iPad 4th Generation, iPad Mini 4, iPad Mini 3, iPad Mini 2 and iPod Touch 6th Generation devices as mentioned below. Currently, Uninstall / Downgrade Latest iOS 10.3 to Older iOS 10.2.1 Firmware is possible only because Apple is still signing iOS 10.2.1 firmware version.
Reverting back to older iOS firmware from latest iOS version can allow Apple iDevice users to regain iOS Jailbreak possible by TaiG, PanGu and 25PP jailbreak tools with Cydia tweaks and apps installation (if admissible and permissible) from time to time.
- You must ensure to back up every data and private files stored on your device.
- Make sure to press Restore button, instead of Update button on iTunes.
- You need to Disable Find My iPhone / Passwords / Passcodes or any other security check.
- Download iOS 10.2.1 .IPSW Final Version (If still Signed by Apple)
- Download iTunes for macOS and Windows (Latest version only)
Step 1: First download your desired iOS 10.2.1.ipsw firmware version via direct links available above.
Step 2: Start iTunes software, and connect iPhone, iPad or iPod touch using USB data cable with PC / Laptop.
Step 3: Now, Put your iOS-Device into DFU Mode by press and hold altogether "Home" and "Sleep/Wake" buttons, now after 15 seconds release "Sleep/Wake" button only, while holding only "Home" button, until "It has detected an iPhone in recovery mode" message appears on iTunes software.
Step 4: You don't need to panic if your iDevice screen remain black, after that click and hold "Shift Key on Windows" and "Alt/Option Key on macOS" and Press "Restore iPhone..." button on iTunes. (See image below)
Step 5: After that "Navigate and Open iOS 10.2.1.ipsw" firmware when iTunes prompt you. Now press "Restore" button. It will take few minutes for whole process of downgrading to get completed successfully. Congratulations!! iOS 10.3 Downgrading done.
Watch Video to Uninstall / Downgrade iOS 10.3 to iOS 10.2.1: