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Apple is Upgrading Millions of iOS Devices To a New Modern File System Today (theverge.com)
Apple today began rolling out iOS 10.3, the latest point update to its mobile operating system. iOS 10.3 brings with it several new features, chief among which is a new file system -- called the Apple File System (APFS). From a report: It's a file system that was originally announced at WWDC last year, and it's designed with the iPhone, iPad, Apple Watch, Mac, and Apple TV in mind. Apple has been using its 31-year-old Hierarchical File System (HFS) for iOS devices so far. It was originally designed for Macs with floppy or hard disks, and not for modern mobile devices with solid state storage. Even its successor, HFS+, still doesn't address the needs of these mobile devices enough. Apple's new APFS is designed to scale across these new types of devices and take advantage of flash or SSD storage. It's also engineered with encryption as a primary feature, and even supports features like snapshots so restoring files on a Mac or even an iOS device might get a lot easier in the future.
Ext4 doesn't have user data checksums, only metadata: https://ext4.wiki.kernel.org/i...
That sounds reasonable, except for every single part of the statement being a complete falsehood.
If it can't be updated past 9.3 then it must be the 2012 model. I understand the frustration of not being able to update your MP3 player but none of the comparable iPhones and iPads got the update to iOS 10 either. The 2015 model of the iPod touch does get iOS 10 and likely 11. To be fair, the 2012 model got iOS 6, 7, 8 and 9 before being dropped.