Ios 4 updating
This puts a greater importance on your move to i OS 11.4.
Once you move to i OS 11.4, you’re stuck with i OS 11.3.1 and i OS 11.4 until Apple rolls out a new version of i OS.
Apple quickly rolled out a server-side fix, but the company restored full functionality with the release of i OS 11.2.1.
If you skipped i OS 11.2.1 and use Home Kit, you should download i OS 11.4 right now.
The i OS 11.4 update is a sizable download for all i Phone, i Pad, and i Pod touch models.
If you’re coming from i OS 11.3.1, the update is several hundred megabytes. If you skipped i OS 11.0, i OS 11.0.1, i OS 11.0.2, i OS 11.0.3, i OS 11.1, i OS 11.1.1, i OS 11.1.2, i OS 11.2, i OS 11.2.1, i OS 11.2.2, i OS 11.2.5, i OS 11.2.6, i OS 11.3, or i OS 11.3.1, you i OS 11.4 update will be much bigger.
Apple's i OS 11.2 update fixed several problems, but it also brought problems of its own including a potentially nasty zero-day i OS Home Kit vulnerability.
The vulnerability, discovered by Tian Zhang, allowed for unauthorized control of Home Kit accessories including garage door openers and smart locks.
If you skipped i OS 11.2.6, you'll get these enhancements with i OS 11.4.We're waiting on Apple to release the exact nature of the patches and we'll relay that information once it becomes available.i OS 11.4 also reportedly comes with a USB Restricted Mode that disables the Lightning port on your i Phone or i Pad if a device hasn't been unlocked or connected to a computer using a passcode within the last week.While most of you should install the i OS 11.4 update today, others might benefit from waiting a few more hours, a few more days, or even a few weeks.i OS 11.4 is the company’s fourth, and perhaps, final milestone release for i OS 11.And like all milestone upgrades, Apple’s latest software update delivers a collection of important features, fixes and security patches.