IP500v2: Voicemail Pro without Essential

[Michael5u]

Hello guys,
I have a small Basic Edition IP500v2 R8.1 with IP500 Upgrade Standard to Professional (Obsolete) и Preferred Edition (Voicemail Pro) (Dormant) licenses. Maybe there was a firmware update without a license update, I don't know. In R8.1, VMPro requires Essential Edition license. If I downgrade an IPO firmware to R7.0 will the Preferred Edition license become valid so I could use the Voicemail Pro?

 

[amriddle01]

You need to buy an essential edition licence, no way around it now.
That "upgrade standard to Pro" licence can be deleted, and that being there means those licences must have been transferred from a 500v1 as that licence has never existed for the 500v2.