Supports iOS 12.0 -> 12.1.2 and 12.4 , pre-A12.
GeoSetter for iOS 12 is a free tool to set nonce on your Apple device. Generating a nonce from blobs on your iPhone, iPad, or iPod allows you to downgrade or upgrade iOS to not signed version. This is very useful if you like to install jailbreak ready iOS on your device.