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If you're running software older than iOS 12.3, your iOS 12.5.5 update carries iOS 12.3's security patches on board. If you're interested in the specifics, you can read about them on Apple's security site. IOS 12.4 brought 19 security patches to the iPhone, iPad, and iPod touch. If you're on software that's older than iOS 12.4, you get iOS 12.4's patches with your iOS 12.5.5 update.
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You can read about that patch right here.
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If you're on software that's older than iOS 12.4.1, you'll get iOS 12.4.1's security patch with your iOS 12.5.5 update. You can read about the security contents of iOS 12.4.2 right here. If you're running software older than iOS 12.4.2, you'll get an its patch with your upgrade. If you're running software that's older than Apple's iOS 12.4.4 update, you'll want to download iOS 12.5.5 in the near future because it brings iOS 12.4.4's security patch to your device. If you skipped iOS 12.4.7, you also get the update's three security patches (two for the Mail app and one for Wi-Fi) with your upgrade to iOS 12.5.5. You can read more about those right here. If you missed iOS 12.4.9, you'll also get its four security patches with your upgrade. Apple's outlined the update's patch in detail on its security site. If you also skipped iOS 12.5, you'll also get its patch with your upgrade. You can read more about it over on Apple's website. If you skipped iOS 12.5.2, you'll also get its security patch with your upgrade. If you want to learn more about them, head on over to Apple's security site. Both of its patches were related to WebKit. If you skipped iOS 12.5.3, you'll get its security patches with your upgrade. If you're interested in the particulars, head on over to Apple's website for more. If you missed iOS 12.5.4, you'll get that update's important security upgrades with your iOS 12.5.5 update. You can learn more about the trio on Apple's security site. The iOS 12.5.5 update brings three security patches to your iPhone, iPad, or iPod touch.
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If you're on the fence, here's one of the best reasons to install iOS 12.5.5 right away.
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If you do run into issues on iOS 12.5.5, note that you can’t downgrade your device’s software to the previous version of iOS 12 in an effort to improve its performance. iPhone, iPad, and iPod touch owners are reporting various problems with the latest version of iOS 12. That being said, while some users might see a boost, others might run into bugs and performance issues. Those of you dealing with issues on older versions of iOS could see a big turnaround after installing iOS 12.5.5. If you’re moving from an older version of iOS 12, you may see a larger download size because the features and fixes from the updates you skipped are baked into your version of the upgrade. Those of you moving up from iOS 12.5.4 will see the smallest download size. The iOS 12.5.5 update is a point upgrade and requires a very small download.
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IOS 12.5.5 is now available for the iPhone, iPad, and iPod touch and the upgrade comes with a short list of changes for your iPhone 6, iPhone 6 Plus, iPhone 5s, iPad Air, iPad mini 3, iPad mini 2, or sixth-generation iPod touch. And while some of you should install the iOS 12.5.5 update right now, others might benefit from waiting a few more hours, days, or longer, before making the move. The newest version of iOS 12 could have a significant impact on your device’s performance.