ipad2 freezes installing IOS 9.3.5
I just tried to install IOS 9.3.5 on my iPad 2. The device is now frozen and does not respond to any controls. It displays the apple logo in the centre of the screen, alternating between black on white and white on black every few minutes.
I tried holding the power and home buttons to force a reboot but this made no difference. The device will not power off.
How can I get out of this?
iPad 2

