Samsung galaxy s6 not register on network

Hi all
I have Samsung galaxy s6 sm-g920i
Problem with network
Not register on network
I'm do reset efs
Imei 3500000000
Sn none
How I can repair network and write imei or super imei
I have
Z3x. Not support this model
Asansam box. Not support this model
Octoplus. Not support this model
Spt. Field write imei
BST. Write msl field
Pleas help me what I can do?

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Samsung galaxy s6 not register on network