Apple on Monday released iOS/iPadOS 26.4 Developer Preview Beta 2 (build number: 23E5218e) to iPhone and iPad users, 7 days after the last Beta/RC release.
How do I upgrade to the iOS/iPadOS/watchOS/macOS developer and public beta versions?
• Public beta: Requires registration for the Apple Beta Software Program, then upgrade via Settings > General > Software Update > Beta Update;
• Developer Preview: You need to log in and register for the Apple Developer Program, and then upgrade through Settings > General > Software Update.
Here is a complete list of Apple iOS historical firmware downloads:
Apple iOS / iPadOS / macOS Firmware Downloads / Update Logs (Complete List )
In this update, Apple optimized cross-platform communication, improved UI design and interaction, and enhanced the automatic downgrade mechanism for beta systems. However, new emojis are still missing, and some new features still have strict regional restrictions.
Appendix: Release history of iOS / iPadOS 26
-
2026-02-17: iOS 26.4 Beta (23E5207q)
-
2026-02-12: iOS 26.3 (23D127)
-
2026-02-05: iPadOS 26.3 RC (23D125)
-
2026-01-27: iOS 26.2.1 (23C71)
-
2026-01-27: iOS 26.3 Beta 3 (23D5114d)
-
2026-01-13: iOS 26.3 Beta 2 (23D5103d)
-
2025-12-16: iOS 26.3 Beta (23D5089e)
-
2025-12-13: iOS 26.2 (23C55)
-
2025-12-04: iOS 26.2 RC (23C52)
-
2025-11-18: iOS 26.2 Beta 3 (23C5044b)
-
2025-11-13: iOS 26.2 Beta 2 (23C5033g)
-
2025-11-05: iOS 26.2 Beta (23C5027f)
-
2025-11-04: iOS 26.1 (23B85)
-
2025-10-29: iOS 26.1 RC (23B82)
-
2025-10-21: iOS 26.1 Beta 4 (23B5073a)
-
2025-10-14: iOS 26.1 Beta 3 (23B5064e)
-
2025-10-07: iOS 26.1 Beta 2 (23B5059e)
-
2025-09-30: iOS 26.0.1 (23A355)
-
2025-09-26: iOS 26.1 Beta (23B5044l)
-
2025-09-16: iOS 26 (23A341)
-
2025-09-03: iOS 26 Beta 9 (23A5336a)
-
2025-08-26: iOS 26 Beta 8 (23A5330a)
-
2025-08-19: iOS 26 Beta 7 (23A5326a)
-
2025-08-12: iOS 26 Beta 6 (23A5318c)
-
2025-08-06: iOS 26 Beta 5 (23A5308g)
-
2025-07-23: iOS 26 Beta 4 (23A5297i)
-
2025-07-08: iOS 26 Beta 3 (23A5287g)
-
2025-06-24: iOS 26 Beta 2 (23A5276f)
