Signed IPSW files can be restored via iTunes. Unsigned IPSWs cannot currently be restored via iTunes.

2016年8月25日 · To update your iPhone you will need to download the latest firmware file (IPSW). iOS 9.3.5 is an important security update that fixes a spyware flaw. For complete specifications, images and...

2024年9月16日 · There are two ways to update your old iPhone. You can update it wirelessly over WiFi or connect it to a computer and use the iTunes app. Back up your iPhone. Make sure your iPhone is...

Plug your device in to power and connect to Wi-Fi. From the General screen, select Software Update. Then Download and Install. Tap Install. If asked, enter your passcode. To learn more, visit Apple Support: Update the iOS software on your iPhone, iPad, or iPod touch. Open the Apple Watch app on iPhone. Tap My Watch, then General.

2024年9月19日 · Go to Settings > General > Software Update. Turn on Automatic Updates. Turn on iOS Updates. Your device automatically updates to the latest version of iOS or iPadOS. Some updates might need to be installed manually. Rapid Security Responses deliver important security improvements quicker, before they are included in future software updates.

To update wirelessly, plug in your device to a power source. Tap Settings > General > Software Update. Tap Download and Install. Note: Updates might download automatically while your device is connected to Wi-Fi and a power source. If you use a passcode, you'll need to enter it before installing the update.

Updates give you access to new improvements and fixes bugs on your phone. It is recommended to back up your phone before you start this guide. If your iPhone is up to date, you will see the following screen. Follow the instructions on the screen.

2023年7月18日 · Realize that a 4S can only update as far as 9.3.6. If your device won't update, make sure you are following all the conditions for the method you are trying to use. If you are sure you are following directions correctly, try a different method.: Update your iPhone or iPad - Apple Support - wirelessly*

2024年1月8日 · There are no new updates available for the iPhone 4s and 5s. Hello. You cannot update the software in your iPhone 4s or 5s. The 4s can be updated to iOS 9, and the 5s can be updated to iOS 12. Regards, mdp1101. How about reset the restrictions cu'z the restrictions has secured and forgotten the pass? I hope you gets my grammar.

2022年1月22日 · iOS 9.3.6 is the latest iOS version for iPhone 4S, can’t be update to a higher iOS. If the iPhone has not yet installed iOS 9.3.6, try updating from the computer, see this Apple article: Update software on iPhone, iPad or iPod touch in iTunes on PC. https://support.apple.com/en-gb/guide/itunes/itns3235/windows.