Problem with Virus Os change!!!

[blue-horizon]

Originally Posted by Monobeat

You need to hold exit and power on your Virus to go into OS Update mode. It's simple. Then open the updater, downgrade, and your good to go... It'll definetly let you do it.

I have already done all of this and have OS 2.7.5 on my virus and have the 2.7.5 VC control centre working, but no audio .. if i leave the vc open on the channel strip for bout 20 - 30 mins it will suddenly start to make a buzzing noise until i delete it from the logic channel strip .. other than that no sound at all .. but its showing sound in the VC volume strip !