New iPhone 18 Pro Models Will Have Day One Update

Sep 17, 2026 · 7:25 PM UTC ·1 min read · 0 reactions · 0 comments · 1 view

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▪New iPhone 18 Pro Models Will Have Day One UpdateThursday September 17, 2026 12:25 pm PDT by Juli CloverCustomers receiving an iPhone 18 Pro, ‌iPhone 18 Pro‌ Max, an Apple Watch Series 12, or an Apple Watch Ultra 4 tomorrow will need to ins
▪The ‌iPhone 18 Pro‌ and ‌iPhone 18 Pro‌ Max ship with iOS 27 variants with a 24A427 or 24A8428 version number.
▪The launch version of ‌iOS 27‌ is version 24A437, so if you're getting an ‌iPhone 18 Pro‌, expect a software update during the setup process.

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Original publisher	MacRumors
Canonical URL	https://www.macrumors.com/2026/09/17/iphone-18-pro-day-one-update/
Publication time	Thu, 17 Sep 2026 19:25:14 +0000
Retrieval time	2026-09-17T19:28:44.416Z
Last seen	2026-09-17T19:28:44.416Z
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New iPhone 18 Pro Models Will Have Day One UpdateThursday September 17, 2026 12:25 pm PDT by Juli CloverCustomers receiving an iPhone 18 Pro, ‌iPhone 18 Pro‌ Max, an Apple Watch Series 12, or an Apple Watch Ultra 4 tomorrow will need to install a software update right away. The ‌iPhone 18 Pro‌ and ‌iPhone 18 Pro‌ Max ship with iOS 27 variants with a 24A427 or 24A8428 version number. The launch version of ‌iOS 27‌ is version 24A437, so if you're getting an ‌iPhone 18 Pro‌, expect a software update during the setup process. The Apple Watch Series 12 and the ‌Apple Watch Ultra 4‌ have watchOS 27 with a version number of 24R359, but the launch version of ‌watchOS 27‌ is 24R364. We're also expecting the AirPods 5 to have a day one firmware update, though that will happen over the air.

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