- Joined
- Mar 20, 2013
- Messages
- 108
- Motherboard
- Gigabyte Z390 I Aorus Pro Wifi
- CPU
- i5 9500
- Graphics
- RX560
- Mac
- Mobile Phone
Thank you for the elaboration. But the problem is that I always used not valid SN. And I used multiple no valid SN and every time I logged out and removed the machine from icloud. Therefor I am confused what might be the problem.As @Edhawk said in his post, you want the Apple Support page to say it doesn't recognize the Serial Number.
You just need to keep generating and checking the S/N validity until you get a 'Not Valid' result.
I suspect if you've been using a S/N that came back as valid after checking, you're ID on this machine has been flagged as a potential security risk on Apple Servers or your machine it self.
To possibly overcome the problem, you need to again remove the machine from your account and log out of all Apple Services.
Next you must Generate New Values i.e (non valid) S/N, SmUUID, ROM and MLB and enter these into the config.plist, reboot, clean NvRAM.
Hopefully these steps will remove the security flag. In the past the removal took from an hour to a few days, whether that is still the norm I don't know as I have not come across posts with iMessage problems for a while now.
I'll try to wait more till I register new SN.
Or do I need to logout from all devices(iPhone, iPad, real Mac) and remove everything from my appleid?