Apple iOS 15.8.1 RC released

[Click here to go directly to the upgrade tutorial] According to news on January 18, Apple pushed the iOS 15.8.1 RC update (build number: 19H380) to iPhone users today. This update is 183 days after the last release.

Querying relevant information, no update content of this version was found. It only mentioned: "This update provides important security updates. Users are recommended to upgrade as soon as possible."

Developers and testers can use the "Feedback" application Report error. If you don't have a public or developer profile installed, you can still open the app by entering the following URL in Safari: applefeedback://.

How to upgrade iOS / iPadOS / watchOS / macOS development version and public beta version?

• Upgrade to iOS/iPad OS 17 developer preview and public beta, please refer to friends’ experience sharing:

  • Experience Post 1
  • Experience Post 2
  • Experience Post 3
  • Experience Post 4
• Starting from iOS/iPadOS 16.4 Developer Preview Beta 1, you need to register for the Apple Developer Program. After registration, open the system [Settings] [Software Update] to see the upgrade option. Note that your iPhone or iPad must be signed in with the same Apple ID you used to sign up for the Apple Developer Program to see the upgrade option in Settings.
• In future iOS and iPadOS releases, this new setting will be the way to enable developer previews and public betas, and configuration profiles will no longer grant access.

  

  Attached is the Apple iOS firmware download history:

"Apple iOS/iPadOS/macOS firmware download/update log"

Attached is the iOS/iPadOS 15 release history:

1. 2023-10-26 : iOS 15.8 (19H370)
2. 2023-09-12: iOS 15.7.9 (19H365)
3. 2023-07-25: iOS 15.7.8 (19H364)
4. 2023-07-19: iOS 15.7.8 RC ( 19H364)
5. 2023-06-22: iOS 15.7.7 (19H357)
6. 2023-05-19: iOS 15.7.6 (19H349)
7. 2023-05-10: iOS 15.7.6 RC (19H349)
8. 2023-04-11: iOS 15.7.5 (19H332)
9. 2023-03-28: iOS 15.7.4 (19H321)
10. 2023-03-22: iOS 15.7.4 RC (19H321)
11. 2023-01- 24: iOS 15.7.3 (19H307)
12. 2023-01-19: iOS 15.7.3 RC (19H307)
13. 2022-12-14: iOS 15.7.2 (19H218)
14. 2022-12-08: iOS 15.7 .2 RC (19H218)
15. 2022-10-28: iOS 15.7.1 (19H117)
16. 2022-10-19: iOS 15.7.1 RC (19H115)
17. 2022-09-13: iOS 15.7 (19H12) -02022-09-08: iOS 15.7 RC (19H12)
18. 2022-08-18: iOS 15.6.1 (19G82)
19. 2022-07-21: iOS 15.6 (19G71)
20. 2022-07-16: iOS 15.6 RC 2 (19G71)
21. 2022-07-13: iOS 15.6 RC (19G69)
22. 2022-07-06: iOS 15.6 Beta 5 (19G5063a)
23. 2022-06-29: iOS 15.6 Beta 4 (19 G5056c )
24. 2022-06-15: iOS 15.6 Beta 3 (19G5046d)
25. 2022-06-01: iOS 15.6 Beta 2 (19G5037d)
26. 2022-05-19: iOS 15.6 Beta (19G5027e)
27. 2022-05 -17: iOS 15.5 (19F77)
28. 2022-05-13: iOS 15.5 RC (19F77)
29. 2022-05-04: iOS 15.5 Beta 4 (19F5070b)
30. 2022-04-26: iOS 15.5 Beta 3 ( 19F5062g)
31. 2022-04-19: iOS 15.5 Beta 2 (19F5057e)
32. 2022-04-05: iOS 15.5 Beta (19F5047e)
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