We have Aruba 650 series,we downgrade Aruba OS 6.1.1.0 to Aruba OS 3.4.4.3, we have problem with Policy Enforcement Firewall Next Gen License (16 AP Support), error message Key contains limits that are not valid for ArubaOS. We want activation key working for Aruba OS 3.4.4.3. What should we do,we hope for best solution.