Will it be possible to restore my iPad in iTunes on iPad 4 64Gb Wi-Fi with iOs 6.0 from the copy made from The New iPad 16Gb Wi-Fi with iOs 5.1.1?
I know that after copying from the second one and before restoring I need to unregister it.
See Restore from Backup here... http://support.apple.com/kb/ht1766
Unable to restore from a backup of a newer iOS device.
But the reverse (of an older) will be OK?
It is OK as long as the device you are trying to restore (the 4th gen) has a version of iOS that is higher than or equal to the version of iOS when the backup was made (on the 3rd gen), which it does. So you're fine.
Yes, You can restore from an Older backup if this is what you mean.
Great thanks AnaMusic, stevejobsfan0123
No problem. Enjoy.
Retrieving data ...