不需要三码,自己按照步骤
This is how I got it working with Clover Bootloader. If something isnt clear I can post more pics.
Get Clover Configurator
Open it and Mount your EFI. (I suggest backing up config.plist)
In Clover Configurator (CC) there is a menu. "Rt Variables". DONT USE THAT.
Go to SMBIOS. See that magic wand? Click That. Try and make that stuff match your stuff as best you can. Click shake a few times on each section. Click Ok. Now in the main menu will be your serial number.
Take that value and post it https://selfsolve.apple.com/agreementWarrantyDynamic.do. Use safari. I didnt get the error message w/ Chrome. If you get the error message you are good to go. If it comes up with some info, respin some numbers in CC and try again.
delete cache files just in case.
At this point if you have an "invalid serial" according to apple and have cleared those files you should be GTG and can reboot. Open iMessage and all should be well. I had to actually open and close it twice before I got this message:
https://i.imgur.com/kRK5U17.png
EDIT: As per convos w/ other peeps, If you are still getting an error double check Rt Variables section in clover is clear ROM and/or MLBs arnt being added anywhere else in your config.plist. Then run Repaire Permissions on the drive.