Yes Fredyama's 3866 profile does work, the only change I had to make was setting IO and SA voltage both from AUTO to 1.25 volts. Dram voltage is at 1.90 volts which is what the profile sets it to. All the timings in the 3866 profile worked perfectly.
But what does that mean in relation to trying to get 4133 C12 to work ?
I have read all your DDR4 guides that you have written, which has helped me learn how to overclock b-die, but the codes 49 and 2b are not covered in your guides as to what they could be referring to and what to change, which is why I am not sure what to fix in order for it to work successfully at 4133.