macOS Releases
Looking for all macOS releases timeline or firmware versions for Apple Mac? This page, provide you the details timeline of all macOS, when it was released, is it still signed or not, and provide you links to download directly from official sources.
Whether you want to update, restore, or fix your device, this page, provide you a complete overview of your selected macOS version is it still signed or Apple unsigned it & give you an idea of how you can use this firmware to restore or fix normally.
What is macOS & IPSW?
macOS is a operating software designed by Apple for Mac. Apple keep releases new macOS regularly to add features, improve performance, and enhanced security & each update (like macOS 17, macOS 18, etc.) comes via OTA directly on Phone or as IPSW Firmware for flash using iTunes or Finder.
An IPSW file is the official iOS firmware package that allows you manually install or reinstall macOS version on Mac using iTunes (Windows) or Finder (Mac). Also, the full system file helps you fix stuck at boot logo, downgrade to old signed version, reset passcode, fix software issues or boot errors, etc easily.
β Signed IPSWs
98The Signed IPSW files is currently approved by Apple and can be restored via iTunes, Finder, or idevicerestore.
Signed vs Unsigned macOS Versions?
You have to Understand the signing status of a iPSW firmware before trying to manually restore your Mac using iTunes or Finder. Apple TSS (Tatsu Signing Server) verifies whether a specific macOS version is still authorized or not, the approved version is labelled as Signed & the rest will show βUnsignedβ.
You can use the Signed IPSW Mac version to manually install, fix stuck at boot logo, downgrade to old signed version, reset passcode, fix software issues or boot errors, using iTunes or Finder.
The unsigned version will not approved by Apple server, so, the Installation will be blocked you canβt install this using any official methods. More details, visit our realtime signing checker page: macOS Signing Checker.
π Unsigned IPSWs
26The Unsigned IPSWs cannot be installed, restored to via official iTunes, Finder, or idevicerestore methods.