Samsung N910T 5.1.1 Need Help Writing CERT

Hello I have a Samsung Galaxy Note 4 N910T which is not wiping. Meaning I cant write cert. Based on my searches I have done the following.
1. Wipe Security with Z3X and Octopus.
2. Reset MSL with Z3X and Octopus
3. tried downgrading to 5.0.2
4. Did the recoverycashe file flash
5. Downgrading the modem.
6. The *#9090# and/ or *#0011# to wipe the efs, still no luck.
If anyone Has a solution please help me out.
Need to get this done ASAP.

PS. The phone has already been rooted with the 5.1.1 version.

@OctopusBox @Blang