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If you are locked out and the iPad is disabled, then your only option is erase the iPad from iCloud or force-restore the iPad to factory settings through iTunes on your computer by putting it to DFU (Device Firmware Upgrade) mode, which will erase everything from it. This is how Apple designed it to protect the information of their users as Apple disabled it when you enter incorrect passcode for multiple times. (Note : DFU Mode is a method which allow you to bypass the passcode screen and get it restored)
But if you had backed up your iPad to iTunes on your computer or iCloud, then you can restore all your data back after restoring your iPad from iTunes/iCloud. You can also redownload all your past purchases for free using the same account.
Following are the two methods to fix it
Method 1 : Erase from iCloud
If you have iCloud enabled on it and also if your iPad is connected to WiFi/internet, then you cando the erase (restore) from iCloud - so you don't have to go through the restore steps.
On your computer, goto www.icloud.com
Login to your iCloud/Apple account. Click Find iPhone. Select your iPad under All Devices. Click Erase button and it will be erased (if it is connected to WiFi network). This will erase and restore your iPad . After that, setup your iPad .
If this didn't work,then please do the Method 2 following below;
Method 2 : Fix it using iTunes on your computer by putting the iPad to recovery/DFU mode
Follow the steps below to restore your iPad by putting it to DFU Mode.
First download and install latest iTunes on your computer from here (ignore if you already have latest iTunes) : https://www.apple.com/itunes/download/
Then connect the iPad to your computer with the USB Cable.
Open iTunes application on your computer.
On your iPad press and hold the Home button and the Power button at the same time.
After EXACTLY 8 seconds release the Power button. Continue holding the home button until your iTunes shows a message telling you that it has detected an iPad in recovery mode.
Click OK or Restore
Note : Put it to DFU Mode while connected to computer and also in DFU Mode your iPad will remain blank and will be unresponsive. It is normal. If it is not showing blank/black screen, then repeat the steps again. Timing is critical when you put it to DFU Mode. So keep trying until it goes to DFU Mode. And it will take a while to restore it.
Remember, it may take a while to restore the iPad (the iOS firmware has to be downloaded, you will see the Download button - a downward arrow button with spinning circle around it, at the top right corner of iTunes screen. Click it to see the time remaining)
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