Can I use master code 7 with with Easy C v1?

I finally found my original EasyC V1 disk with the serial code. But I had been using the trial version of EasyC V2. Which means I have master code 7 installed on my controller. Will I brick the controller if I try to use EasyC V1 with master code 7 installed?

You will not brick the controller but you may experience some issues using Mastercode 7 with easyC V1. I would recommend you down grade to mastercode V5.