SAMSUNG G930U UNLOCK error

Waiting for device to become ready... OK
Reading phone info...
Model: SM-G930U
Android version: 8.0.0
PDA version: G930UUESBCTA3
CSC version: G930UOYMBCTA3
Phone version: G930UUESBCTA3
Product code: SM2G930TZKATMB
CSC country code: USA
CSC sales code: TMB
Carrier ID: TMB
Phone SN: R28J63574HH
IMEI: 359755077318398
HW version: REV0.6
RF cal date: 2017.06.26
Chip name: MSM8996
Modem board: MSM8996
Security patch: 2019-12-01
Boot Warranty bit: 0
SIM State: ABSENT
This phone may be locked to TMB and may not unlock via codes Continue? Yes
Initialization zTool... OK
Running zTool, please wait... OK
Reading data from phone... OK
Waiting for device to become ready... OK
Searching Samsung diag port... detected COM14
Reading phone info... OK
Initialization zTool... OK
Running zTool, please wait... OK
Reading data from phone... OK
Executing... OK
Searching Ramdump interface... COM4 detected
Reading data from phone... OK
Calculating... OK
Searching server... OK
Waiting for server answer... error (1)
Server error: Could not decrypt security data, please try again
Update your firmware to latest

PLEASE HELP