How to fix iPhone camera hanging and portrait mode not working?

You cannot downgrade to just any version of iOS whenever you want. Apple only allows a particular iOS version to be installed while that version is still being signed by Apple.

If you are currently on a newer version of iOS 27, you may be able to downgrade to iOS 26.7.1, provided Apple is still signing that firmware version. Once Apple stops signing it, the downgrade will normally no longer be possible through the standard restore process.

If you already have the correct IPSW firmware file for your exact iPhone model, you can use it to attempt the installation through Finder on a Mac or Apple Devices/iTunes on Windows. However, having the IPSW file alone is not enough—Apple's signing server must still authorize that particular firmware version.

In short:

• IPSW file available + Apple still signing it: You may be able to install iOS 26.7.1.
• IPSW file available + Apple has stopped signing it: The restore will generally fail.
• No IPSW file: You can still download the appropriate IPSW, but it must be for your exact iPhone model.
• A downgrade can also require a full restore, so make sure you have a current backup before proceeding.

Therefore, the first thing to check is whether Apple is still signing iOS 26.7.1 for your specific iPhone model.

Nishanth886 wrote:

Original Title: My phone’s camera is getting hanged, portrait mode is not working. Couldn’t able to capture my photos 

Not every issue an individual encounters on their device can be attributed to an iOS update. iOS 27 or later may have coincided with what you are experiencing, but that does not mean the issue was triggered by iOS. Coincidence in timing is not, by itself, evidence of causation.

If the update itself were the root cause, then every device running that same version of iOS would exhibit the identical problem. In such a scenario, the forums would be flooded with countless posts reporting the same malfunction, creating an unmistakable wave of complaints that no one could possibly overlook.

The absence of such widespread reports strongly indicates that the issue is not a general, system-wide problem with iOS 27 or later, but rather something specific to the individual device, its configuration, installed apps, settings, hardware, or another interacting factor.

In short: iOS 27 or later may be a coincidence in timing, but there is no basis to conclude that iOS itself triggered the problem simply because the issue appeared after the update.