Yes but I suggest not downloading it for there is many serious problems with the update such as memory loss, battery leak, and wifi not connecting.
You have to update your iPad 2 to iOS 5 if you bought it prior to the launch of iOS 5. You can update now to iOS 6 (and soon iOS 7), by plugging your iPad 2 into the computer you authorized with your iTunes account and waiting for the pop up that will ask if you want to install the new software update. The process should take 1-2 hours.
You cannot. The iOS 5 update is only for Iphone 4, iPod touch 4, iPad 1, iPad 2
If you have the iPad 2 or the new iPad, you have to have iOS version 5 and above to bypass the connecting to a computer. If you have the original iPad, this is not the case as it doesn't support iOS 5 and above.
No.
Wednesday 17 2014 ios 8 will be out for 4s 5 5c 5s and iPad 2 iPad mini
iOS 4 is the name of the iPad operating system (iOS) and the version (4)
Any iPhone, iPod touch, or iPad that is using iOS 5.
No, the A4 chip is. A5 is in iPad 2 and iPhone 4S
Any iPhone, iPod touch, or iPad that is using iOS 5.
You cannot. If you buy a new iPod or iPad or iPhone, it comes in iOS 4.3.3 and you have a choice to update to IOS 5 or not.
iOS 5 should be compatible with all iPad models. To install, you must plug your iPad into an iTunes-authoized computer at your house and wait to be given the prompt to update your iPad. If you don't receive a prompt, click on your iPad's name on the sidebar and click "Check for updates". NOTE: You can no longer download iOS 5 for any iPad other than the original iPad. If you go through this procedure with an iPad 2 or higher, you will instead get prompted to download iOS 7.1.
No, the update is only for iPhone 4, iPod touch 4, iPad 1, iPad 2. The highest version iOS Firmware for the iPod Touch 2G is 4.2.1.