Hello!
I think I still had beta2 or 3 running on my ipad ng (1st retina version with 30pin port).
I got some popup warnings regards old ios version. but eveytime I went to the software
upgrade menu it told me I had the most recent version. (refering to KB HT1808)
I had even flied a feedback report for that, ...
Now the ipad locked itself with the info the version is expired. When I connect it to itunes it says:
and then a check for an update tells me "iOS 9.0 - is the current version".
And sure, I did a restart of the ipad as well, .... it goes in the activation mode which then fails.
Any idea how to fix this?