Change iCloud account under IOS7
Never used the cloud under IOS6, changed my apple ID due to a new e-mail address, upgraded to IOS7, during reboot no option to change the cloud ID, just continue.
Now stuck with an Iphone I can't back-up, or basically do anything with as it's locked by an old clould account linked to a no longer existing e-mail address.... Removal of the Icloud account requires the password for the no longer existing account, linked to a no longer existing e-mail address. Catch-22
HELP!!
iPhone 4, iOS 7