(We can check the system version of the iPad 2 by going to "Settings" General "About the Native Computer. If it is iOS 4.3.3, you can directly cross/yu. If the system version is lower than iOS 4.3.3, you need to upgrade. IPad 2 upgrade method: link the iPad 2 to iTunes, press and hold the Shift key in the system overview interface (press and hold the Option key in the Mac OS X system), and select the firmware 4.3.3 of the iPad 2 in the fill out window.)