Thanks for you reply. Silly me, I had done this already but I did not realize that there were more than the two choices appearing on screen : - a very long line of ATS25 models, it looked too long to fit on the screen. I did not see the AMP model listed in it but I assumed that it was there among th...

Hello to all, I just upgraded my ATS25 AMP to firmware v4.2. It went smoothly, no license issue but now my receiver is stuck on Hi-Z antenna mode, the Hi-Z/50 ohms mode switches are greyed out in the setup menus. Also, I think that FM reception is much degraded compared to 4.17 Air Beta. Maybe becau...

Hello, Thanks for your reply but what do you mean exactly by "have notice your activation code and licence code"? I have the same question as the OP. I have purchased a pre-activated ATS-25 AMP with firmware 4.17 Air Beta. The only information about its license I can find is in the "I...