iPSW Signing Tool:
If you are looking for restoring your iPhone firmware older version. Then you have to download the awesome iPSW Signing Tool for your Windows or MAC. The tool updated version is given to download free for MAC and Windows operating systems.

The way to restore your unsigned iPSW firmware to the older version. Then will need to download all the necessary software from any official server. Get the latest iPSW Signing Tool from a source below and restore your firmware. You can restore your firmware if SHSH2 blobs. If you haven’t this then you can’t restore your iPSW firmware version.

You can backup your SHSH blob from iOS 12. Once your device firmware will be unsigned, you can’t generate the file for a specific firmware version.

• iPSW Signing Tool is the best software for restoring the firmware version.
• You can use this tool to install iPSW iOS.
• It supports downgrade methods.
• iPSW Signing Tool is available as a command program for Mac, Windows, and Linux.
• Download the updated iPSW Signing Tool now.
• For Windows, Mac, and Linux.