How to deal with iOS17.2.1 OTA upgrade failure? iOS17 upgrade guide

OTA upgrade installation refers to upgrading the system directly on the phone after the iPhone is connected to WiFi. This upgrade method is very convenient and can be completed without connecting to a computer. However, if the WiFi signal is unstable, it may be impossible to check or install updates, because OTA upgrades have higher network requirements.

Why can’t I upgrade via OTA?

What should I do if I cannot upgrade to iOS17.2.1 via OTA normally?

How to OTA update the iOS 17.2 beta version to the official version of iOS 17.2.1?

iOS upgrades are generally pushed through the version number. Only the version pushed is higher than the current system version. For example, the version number of iOS 17.2 RC version is (21C62), and the version number of the official version of iOS 17.2 is also (21C62). In theory, this is the same firmware. If you have upgraded to iOS 17.2 RC version, the same version number cannot be upgraded at the same level, so Unable to receive the push for the official version of iOS 17.2.

At this time we need to enter [Settings]-[General]-[Software Update]-[Turn off Beta updates], so that when the official version of iOS 17.2.1 is pushed, OTA can be updated to the official version normally.

Under normal circumstances, OTA upgrade to the official version can be performed as follows:

1: If the official version of the device has been installed, you can directly open [Settings] - [General] - in the device. [Software Update] can be upgraded OTA;

2: For devices with the Beta version installed, you must first delete the installed Beta version files in [Settings] - [General] - [Device Management], and then restart the phone. Just check for updates again.

It should be noted that after the description file is deleted, the device will only receive official version updates and will no longer be prompted for beta version updates.

In addition, the iPhone cannot be upgraded to iOS17.2.1 OTA due to insufficient space and unstable WiFi connection.

When updating iOS 17.2.1 via OTA, make sure your iPhone is connected to a reliable WiFi and do not download other content at the same time. If there is insufficient space for downloading and installing updates, it is recommended to transfer or delete apps, photos, music, etc. to Tencent. Make enough space. When there is enough space, you can continue to update the system on the iPhone.

The update time will vary according to the size of the installation package. If the update never completes and the progress bar has not moved for a long time, please try to restart the device.

If you cannot upgrade to iOS17.2.1 through OTA on the iPhone, it is recommended to connect the iPhone to the computer and use the "iOS upgrade/downgrade" function of Apple's mobile phone repair tool to upgrade to the iOS system with one click.

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