How I got iMessage/FaceTime working (Try it)

Steps to make it work:-

• Set the ROM to 112233445566.
• Update all the info such as Serial Number, MLB, UUID...(Invalid serial recommended).
• Reset NVRAM.
• Downgrade to Catalina.
• Sign in to iCloud in System Preferences.
• And, if you receive Customer Code, Contact Apple Support by either:-

1. Chat (Go to This link, Select "Apple ID", select "Topic not listed", Type "iMessage doesn't work", hit enter).
2. Call (Go to This link, Select "Apple ID", select "iCloud, FaceTime & iMessage").

Note:-

• If it doesn't work, try changing the ROM to your Ethernet card's MAC address.
• If iMessage works now, you can even clean-install macOS and it will keep working(Don't go anywhere near PlatformInfo and it'll keep working.)