According to the Pacific Computer Network, the specific steps are as follows: 1. Connect the device to the PC with a data cable and run iTools (you need to right-click to run as an administrator under win7).
2. the information of currently connected devices will be displayed in the main interface of iTools. Select the SHSH management option.
3. The currently connected devices and the list of devices that have been connected to backup SHSH will be prompted on the right. Select (click with the left mouse button) the device that you need to back up SHSH. Then click the Save SHSH button above.
the full name of p>SHSH is SignatureHaSHblobs, Chinese signature hash, also known as shshblobs. Shsh is a signing certificate generated by Apple authentication server according to the ECID and firmware version of iOS device.