Checking the sign and sign status of iOS versions will help users know the latest iOS version upgrade status for their device and know which version is allowed to downgrade to avoid error status. . Here are 2 ways to check the sign status of iOS firmware that users can choose to use on their iOS device.
Method 1: Check through IPSW.ME
Step 1: Visit the link below and select the product line where you want to check the sign status of fimware.
Step 2: At the new interface, double-click the device you are using.
Step 3: The list of firmware for that device will be displayed including:
Method 2: Use 3uTools application - iOS all file management application all in one
Step 1: Visit the link below to download and install the 3uTools tool.
3uTools.
Step 2: Open the 3uTools tool, select the Flash & jailbreak tab and Firmware . The operating status of all firmware will be displayed, the green dot is not signed yet, the red dot is locked sign.
Users can select product lines and devices to display information more clearly and visually.
See more:
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