SHSH is simply a record that can ensure your mobile phone can be used normally and jailbroken, because every time Apple releases a new firmware, it will turn off the verification of the previous firmware, which means that if you don't back up your SHSH in time, you can only refresh the firmware after the white apple or the wrong upgrade. To put it bluntly, SHSH of each version of firmware is backed up, so you can bypass Apple's verification and brush all the previous firmware at will (of course, once the baseband is on, there is no way to drop it. ) The SHSH of each machine is just like a person's ID card, so you can't expect others to lend you your SHSH to brush the firmware, because this method is not feasible. Therefore, we should form the good habit of backing up SHSH.

Tips: After backing up your SHSH, it is best to make a copy and put it in a place other than the system disk to avoid losing it when reinstalling the system or restoring.

Backup shsh-

A small umbrella is of course the best choice. Its English name is umbrella. Each firmware has its own version. Because you can't upload the attachment, you can only dictate it once. Download specific tools and search. Take 4. 1 as an example. (You need to install JAVA programs on your computer before using it, and make a backup before 4. 1 is closed. )

Answer: There are children's shoes asking if shsh can continue to back up after itunes upgrade? Whether SHSH can be backed up depends on whether Apple verification is turned off, and has little to do with itunes itself. The backup prompt of itunes is only for your convenience to make a record of the settings of mobile phone and application files, music and movies.

Open the umbrella first -4. 1.4- This version corresponds to 4. 1 firmware.

Then connect your iPhone-

Check the advanced options-first-

At this time, your iphone information will be read.

Select the device to back up. Only 4. 1 can be backed up now. All you can do is choose iPhone 4. 1.

Choose apples in place.

Finally, click Save my SHSH-You're done ~ Applause ~ Flowers ~

When you see SHSH successfully saved! The word [check here to open] indicates that the backup was successful. If you really can't find the SHSH file, use the computer search function to search.