IOS 5.1.1 failure after jailbreak recovery, and upgrade ios6 failure Solution

After ios5.1.1 is jailbroken, I want to upgrade to ios6. The result is an error. Then I want to go back first, and the result is an unknown error. I checked it from the Internet and said that I had to download the firmware first, and then I went down, when the result is restored, an unknown error still occurs. Is my iPad not working. It was finally solved, as follows:

Close pad, open iTunes, press the Home key, and insert the data cable to the Apple computer until prompt ------ recovery appears. Then, release the Home Key and follow the prompts to restore it. The pad will automatically start, prompt pad settings, and finally unplug the data cable. The recovery is successful.

It takes about 15 minutes to recover the software. Because you want to download and install 6, you can download the 6 firmware first, and the system will automatically search for it on your computer. If you cannot find it, you will be prompted to download it. Oh, is your problem solved ......