Thanks for sharing. What do you mean by the A9 activation bug?
Here’s a thread on MacRumors:
https://forums.macrumors.com/threads/iphone-6s-with-ios-9-3-3-suddenly-requires-activation.2222823/
Here’s a YouTube video:
Long story short, all A9 devices (the iPhone 6s, 6s Plus, 1st-gen iPhone SE, 9.7-inch iPad Pro, and the 12.9-inch iPad Pro (1st-gen)) on iOS 9 are rebooted and sent to the activation screen, from where it won’t let you proceed unless you update.
This is specific to those A9 devices on iOS 9. No other processor or iOS version is affected. The iPhone 6 on iOS 8? Fine. The iPhone 5s on iOS 7? Totally usable. A9 on iOS 9 only. Nobody knows why it happens, but Apple seemingly blocked these devices from running, has NEVER spoken about the issue, and support has no idea this is happening. It started somewhere in 2018 (I think), and it has never been fixed.
The sad part is, since Apple won’t allow you to install whatever iOS version you like, in order to use these devices you have to update to the latest version. I want to be extremely clear about the situation: I was reading a newspaper in Safari. The device rebooted on its own, on September 16th, 2019, at 17:15 GMT, and...
I like to take screenshots of things like these, here’s what I saw on my 9.7-inch iPad Pro, which was then running iOS 9.3.4 when this happened:
I tried everything I could back then. I tried to hack my iPad with a tool from the jailbreak community, I tried every single little thing I could try online before eventually giving up and updating. This was my only iPad back then, and I’ve always been a heavy, enthusiastic user. I couldn’t throw it in a drawer until somebody came up with a fix, so I updated. The screenshots that are in the comment you replied to show the result of that.
Apple literally forced me to update, forced me to update to a version I didn’t want to update, and all I have to show for it is sporadic keyboard lag and almost 4 hours less battery life.
This iPad would still be running iOS 9.3.4 if Apple hadn’t screwed up like this.