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Yes, we definitely need something like this for the iDevices - it's outrageous that an old but capable device like iPad Air (1st generation) has to become e-Waste simply because Apple has decided not to support it any longer and won't allow other Operating Systems to run on it. Mac's already have the OpenCore Legacy Patcher - https://github.com/dortania/OpenCore-Legacy-Patcher - that allow you to run newer macOS versions on older and even unsupported Macs.
sadly apple silicon and Tahoe may have delivered a knockout punch to the future of oclp. the dortania team has said apple silicon support is more or less out of the question at this point. with Tahoe ushering in the first large batch of deprecated intel machines with the t2 chip, it’s tbd if dortania will be able to ship something to get them to Tahoe. sad days and may soon mean we’re having the same convo about older Mac’s as we are about old iPhones and iPads.
I think this kind of comment represents a little bit of denial about e-waste.

You call it “old but capable” but it’s really more close to just “old.”

We really want tech to be less disposable but the problem is that tech is still progressing fast.

Automobiles have barely changed in the past few decades as a fundamental concept and in general capability and road-worthiness and that’s why you see a lot of 20-30 year old examples on the road.

But imagine that buying a 2000 Volkswagen Jetta meant a car that had a 20 horsepower engine that gets 20mpg. That’s what old tech devices are often like. Sure, you can use it as a glorified gas-guzzling golf cart, but not many people need that and they’d rather just get a golf cart if they do.

A 2013 iPad Air is not going to be a very usable experience as the device was originally intended even if you get suitably lean software on it.

This is a dual core device with 1GB of RAM. At this point it can barely browse the web in an acceptably performant way. We can lament our inefficient web apps and fuss and moan but if grandma can’t get her slippers from Amazon without waiting half a century for the page to load it’s not a useful device anymore.

Sure, you can use it as a server or something, or maybe some kind of smart display, it would work fine. But let’s go back to the golf cart analogy: presumably the original XX million units that were sold can’t all be web servers or smart home screens. The quantity of people who originally bought them for the original mainstream purpose have moved on to something newer and aren’t looking for a niche secondary use case. You have to be a very specific person to try to fit that square peg into a round hole.

I have been a user of the OpenCore Legacy patcher. I bought a 2012 Mac mini, excited that I could use it as a Mac server with the latest OS. The experience was sluggish at best even with a brand new SSD installed and RAM maxed out. I also had random kernel panics that I couldn’t resolve. So I ditched the Mac server idea and installed Linux. I went with that for a while but it turned out to have insufficient single core performance for my applications. The architecture also couldn’t accept more RAM even if I found higher capacity sticks, the technology was completely at the limits. I ended up selling it and built a server with much newer (but still mostly used) parts instead.

The calculus for reuse gets even worse if you start thinking about performance per watt and energy efficiency. There are some devices especially in the desktop category where you get to 15 years old and you have a real legitimate “I’ll save more energy and cost on my power bill” argument.

E.g., Let’s say I own an AMD FX 9590 (2013) with its 220W TDP, I can replace that with an Intel N355 15W embedded class chip and it’ll be faster by a double digit percentage with the same number of threads. I know this is an extreme example but it’s still a demonstrator in the amount the technology has changed.

This would be like if my 2013 Toyota got 2mpg.

I think we need to be more pragmatic and accept these devices for what they are: a temporarily owned thing, almost like a lease. They aren’t all that different than buying some fast food that comes in disposable packaging, the difference is the time scale. Once you’ve eaten it, you’ve consumed it, and it’s over. There’s maybe a bit of material you can recover at the end, let’s call it 10%. And we have to grapple with that reality rather than pretending we can fully change it.

Don’t get me wrong, I’m not trying to argue against right to repair. Yes, they should have things like replaceable components and a requirement to become more open as they age. They should be designed to be as usable as possible when they become older. At the same time, we should be pragmatic and accept that the most likely scenario is that a device like a 2013 iPad Air will still only see 5-10% of buyers reusing the device in this way rather than sending it to the bin e...

All of that is cool, but can this help get iOS 18 back on supported devices that have upgraded to 26? That'd be magical.
Well, I wanted to revert and wanted a new phone, so bought an iPhone 16 instead of a 17, which comes with iOS 18 installed. iCloud data synced in fine, and the 17 is a very small upgrade anyway, even a downgrade in some ways.
I have an iPad Air that I love, made in 2014, last iOS is 12.5. I’d love a slightly more current browser, but the rest of the software is working fine. I spend 6-7 hours using it each day.

Just a browser is all I want.

I joined Apple at the start of my career when iOS 6 and Snow Leopard were the active projects. I had to learn all of this. I’ve since forgot but this post was a wonderful bit of proprietary OS jargon and trivia nostalgia for me.
Interesting article. Minor correction:

    $(cat n18.10A403.kextlist | sed 's/^/--bundle-id /') - this weird expression appends --bundle-id to every line from the file at n18.10A403.kextlist. 
It prepends "--bundle-id ".
Really the command to strip a “fat header” is called “lipo”…
Writing this from an iPhone 8 (no sec updates anymore) and I am not feeling good about it…
The last update for iPhone 8 was iOS 16.7.12 on 15 Sep 2025
A bit of OT, but I have four iPhone 5/5s/SE (the SE is peak design and form factor, fight me) lying around that I use strictly as offline devices for things like saving data from my heart rate monitor, controlling my action camera, doing voice/field recordings through the 3.5mm connector – stuff I'd prefer never to leave my device (or data that should be open to user control but requires an invasive app to work, I have very few apps on my daily driver).

These devices are are small, snappy and powerful enough in 2025.

It's a shame there isn't something like Lineage OS for Apple mobile devices.
Fascinating. Could this method be used to boot iPhone OS 1.0 (or at least 1.1.1) on an iPhone 2G with 16GB NAND maybe?

The oldest iPhone OS that natively boots on my particular one is 1.1.4, 1.1.1 (which is the highest version number where you can trivially escape the OOBE via the emergency dialer) fails to initialise the FTL (flash translation layer), probably because the chip is sufficiently different from that used in the older phones.

It would bring me great joy to be able to relive emergency dialer hacktivation again, but I have lost that particular iPhone 2G, and only have this 16GB one left.

Would be cool if companies are forced to open the devices that they aren't supporting anymore.
I have an old iPad Air 1. Can I upgrade to a newer OS from 12?
I feel like there should be ”abandonware” legislation for both software and hardware. Like, if you’ve written code or built hardware (or both) and you’ve sold that to consumers, and you end up dropping support for that thing but the company still exists, you should be legally obligated to provide code and schematics to people that have verifiably purchased it.

The code or schematics doesn’t even have to be freely licensed and distribution could still be restricted, patents still apply and what not, but programmers could develop their own ”patch sets” on top of the proprietary code that can only be used by people who already have the code, extending the lifetime and adding features.

Obviously it’s not perfect but I think it’s a pretty reasonable compromise between companies IP interests and the rights of consumers and fighting e-waste, because the way this is set up today is in my opinion quite absurd. There’s no natural law forcing us to accept planned obsolescence.