Ipad Pro will not reboot or restore
Whilst in process of updated iPadOS 14.3 iPad now will not boot up and isn't recognized by PC.
The image of cable pointing to a laptop appears.
I've tried all the Apple Support guidance - pressing Volume Up/Down/Top button, different USB cables, different ports and two different PC's and a laptop, rebooting PC etc. Nothing happens.
IPad worked on all devices with no trouble before.
Any ideas before I return to shop?
iPad, iOS 10