I had iMessage working perfeclty for over a year on my hack. Last night I noticed that iMessage was not signed in when I booted up. When I tried to sign in I got an error, asking me to contact support. I figured that there's something up with my hackingtosh and i wanted to see if my serial number was fine. I went to https://selfsolve.apple.com/ but it's 404ing (the only way I found to validate my serial number was to try and start a chat). So after checking my SN it turns out it...
iMessage and FaceTime stopped working, Serial Number now not valid
iMessage and FaceTime stopped working, Serial Number now not valid