iOS Signing Status for iPhone & iPad
iPhone 16 (iPhone17,3)
Current iOS Firmware Signing Status
Update May 12, 2025: Apple is currently signing iOS 18.5 and iOS 18.4.1. Use this real-time status to decide if you can upgrade, downgrade, or restore your device with the appropriate IPSW and SHSH blobs.
We track Apple’s signing window minute-by-minute so you don’t miss a firmware downgrade opportunity. Bookmark this page and check back often for the latest updates on signed iOS versions and device compatibility.
What is iOS Signing and Why It Matters?
Apple signs specific iOS versions to control which firmware users can install on their devices. This signing process verifies that the version is supported, secure, and optimized for your iPhone or iPad. Once Apple releases a new iOS version, older versions are often unsigned after a few weeks. Once a version is no longer signed, it becomes impossible to install or downgrade to that version unless you’ve saved SHSH2 blobs for that firmware.
The importance of iOS signing lies in ensuring that devices are always up to date with the latest security patches, performance enhancements, and bug fixes. It also helps Apple limit exploits that hackers can use to jailbreak older iOS.
How to Check iOS Signing Status in Real-Time?
Tracking the real-time signing status of iOS versions is essential if you’re planning a downgrade or restore to a previous version. You can easily check which iOS versions are still signed by visiting websites that provide this data through TSS servers. Tools like TSSstatus or the ONE Jailbreak's iOS Signing Status monitor Apple’s signing servers and give real-time updates on which versions are signed for iPhones, iPads, and iPods.
FAQ
Apple stops signing older iOS versions to ensure users upgrade to the latest, more secure, and optimized releases. This prevents downgrades to less secure versions and promotes stability. Typically, Apple signs iOS versions for 7–14 days after a new release before closing the signing window.
iOS Signing Status is a tool that updates every few minutes the current signing status of IPSW firmware for a wide range of iOS devices, such as iPhones and iPads.
iOS Signing Status tool is an efficient way to check the current iOS signing status. To utilize this tool, simply input your iDevice identifier. Alternatively, you can effortlessly locate your device by specifying its model name and iOS Signing Status will generate the Idenifier ID for your iPhone or iPad.
iOS Signing Status (TSS) allows you to verify whether an iOS firmware is signed and compatible with your iDevice. Apple typically permits the installation of only the latest IPSW images, but there are instances when you can take advantage of signed firmware to downgrade to a previous version.
iOS Signing Status allows you to check iOS signing status of all Apple iPhones and iPads ever released. Whether you're interested in downloading signed or unsigned IPSW images, from the iconic iPhone 2 to the cutting-edge iPhone 16, this versatile platform has you covered.
The term iPhone Identifier usually refers to a unique alphanumeric code or a combination of numbers and letters that serves as a distinctive identifier for a specific iPhone model. Each iPhone model has its own unique identifier, and it helps distinguish one model from another.
The iOS signed status indicates whether the chosen firmware for your Apple device can still be installed. If the signed status is false or unsigned, you won't be able to install the firmware on your device.
To determine whether iOS is currently signed for your iDevice, you can utilize the iOS Signing Status Tool offered by ONE Jailbreak. This web-based search engine enables you to ascertain whether a specific iOS firmware is still signed and can be installed on your iPhone.