User level: Level 1 (12 points)Updated my iPhone 13 to iOS 27 just a few hours ago after it was made public. Can I still downgrade to iOS 26?
Posted on Sep 15, 2026 9:05 AM
User level: Level 10 (454,138 points)Sep 15, 2026 9:34 AM in response to Riders09
The key point is that you can downgrade only to an iOS version that Apple is still signing.
So, if iOS 26.7 and iOS 27 are both currently being signed, you may be able to go from iOS 27 back to iOS 26.7. But if Apple has stopped signing iOS 26.7, you cannot downgrade to it—even if you still have the iOS 26.7 IPSW file.
Therefore, the limitation is not simply that you cannot go below 26.7. It depends on which versions Apple is currently signing. Once Apple stops signing an older version, installation of that version is normally blocked.
User level: Level 10 (107,674 points)Sep 15, 2026 9:28 AM in response to Riders09
No.
(Not unless you previously upgraded using your Mac and you still have the old ipsw file archived and it's still signed, usually that's a no)
User level: Level 1 (12 points)Sep 15, 2026 9:33 AM in response to LD150
Many thanks, LD150. Just a quick question, notifications are showing in dark mode on the Lock Screen after updating to iOS 27. I just hate it. I want my notifications to be in light mode as it appears on iOS 26. I've tried all the fixes sugested across the internet but none of them worked so far.
Originally posted at discussions.apple.com/thread/256357369