iOS 8 was the last "snappy" OS for the A5 devices. On iOS 8.4.1:
Subject: Procedures for exploiting the "Odysseus" vulnerability to install an unsigned iOS firmware version on the iPad 2. downgrade ipad 2 ios 9.3.5 to 8.4.1
Is your iPad 2 running slower than a snail on iOS 9.3.5? You are not alone. iOS 8 was the last "snappy" OS for the A5 devices
The iPad 2 is a legendary device—one of Apple’s longest-supported tablets. However, its final official update, iOS 9.3.5, is infamous for turning this once-snappy tablet into a laggy, unresponsive machine. If you are searching for how to downgrade iPad 2 iOS 9.3.5 to 8.4.1, you have likely realized that iOS 8.4.1 runs considerably smoother on the aging A5 chip. You are not alone
The good news? Yes, it is still possible in 2025. Apple no longer signs iOS 8.4.1 for most devices, but the iPad 2 has a unique "OTA (Over-the-Air) signing loophole." This guide will walk you through every detail, from why you should do it to the exact step-by-step method.
You might wonder: If I can get to 8.4.1, can I go to iOS 6.1.3?
Yes, but that’s a different procedure. The iPad 2 supports a tethered downgrade to iOS 6.1.3 using a tool like CoolBooter (dual-boot) or n1ghtshade (tethered). However, iOS 6 has almost zero modern app compatibility. For most users, 8.4.1 is the sweet spot between speed and usability.