64-bit Device iOS downgrade tool officially released: Can brush back turned off verify firmware

In the middle of this month, jailbreak developer Tihmstar announced that it will release the downgrade tool for Apple's 64-bit iOS device Prometheus, a tool that the developer officially brought to us today to upgrade or demote the device to any version, even if it turns off the firmware-verified iOS system.

Now this tool is cumbersome to operate, Tihmstar advises users to follow the instructions in the tool carefully, before using this tool, please read carefully the source of Prometheus tools and possible problems.

Here are some of the things you can do about the downgrade tool Prometheus.

Development background

Prometheus is not just a GUI tool that integrates the functionality of the "Nonceenabler", "Futurerestore", and "Img4tool" four tools, all with the ability to upgrade or demote the system.

There are two ways to use Prometheus, one of which is to work with the Nonceenabler and Futurerestore two tools, which is more reliable and faster, but requires a device jailbreak and requires a generator backup. SHSH2 blobs file.

Another approach is to use only the Futurerestore tool, which does not require a jailbreak, but requires a certain probability of attack operations on the device, which can take a long time or even be ineffective, as needed. SHSH2 blobs, but must be preserved in a particular way, and it is important to note that This method is only valid for part of the device and will not update any more devices in the future.