both STB Emulator and the stalker plugin for Kodi emulate Mag 254. The problem there is that, while I can change the MAC, it still sends a different serial number, and won't accept an AVOV serial number to send. Won't that knock out IPTV service? I know I can't run both at once anyway, but I thought the server would see that 2 serials are being used and block it.
I don't think that serials have to be unique, just the MAC, meaning you can use a serial with multiple MACs. The serials just make it a complete unique key. I've tested that with Kodi, keeping those credentials, but only changing the MAC.