1. After installing an iTunes software on the computer, we can use iTunes to restore the firmware.
2. Now, we turn the ipad "on key" into shutdown, as shown in the figure below.
3. At the same time, we can press the "on key" and "home key" of the ipad.
4. Then there will be an "apple", and then we press the "Enable Key" phone, but continue to press the "home key.
5. At this time, if a "USB icon" and "Apple icon" appear on your ipad, as shown in the figure "home key", and the two ends of the data cable are inserted into the computer and ipad respectively.
6. then, on the itunes screen on the computer, we will prompt a "iTunes has detected a recovery-mode ipad. You must back up the ipad and use it with iTunes. Click OK.
7. Now, click "Check for Updates", "Restore IPod..." in the computer, and then click "Restore IPod ..."
8. If the following error message appears in iTunes, do not perform any operations first. iTunes will continue to download.
Wait patiently until the project Download is completed (the download takes a long time)
9. Now, press the "enable key" to shut down the ipad.
10. Disconnect the data cable interface of the ipad section, and the data cable interface of the computer will continue to be connected.
11. Press the "home key" for 5 seconds and then connect the data cable interface to the ipad (press the "home key ),
12. After the "USB icon" and "Apple icon" appear on the ipad, itunes will automatically open on the computer.
13. Now we have to wait for the data to be extracted.
14. There will be a recovery process at this time, and it will be fine after recovery.
Reminder
This article does not describe how to activate the ipad after the restored operation is restored. Only the ipad is activated. Of course, after the Restoration, the data in the ipad will be lost, therefore, we usually need to remember to back up data. Of course, this article is a bit messy. In fact, I have never done this before. It's just a few simple steps.