J727T Bit 4 Unlock

Checking Login and Password... OK
Ballance: 40 crd.
You have 40 credit(s) left. This operation takes 5 credits.Continue? Yes
Waiting ADB device... OK
Reading phone info...
Model: SM-J727T
Android version: 8.1.0
PDA version: J727TUVS4BRK1
CSC version: J727TTMB4BRK1
Phone version: J727TUVS4BRK1
Product code: SM2J727TZDATMB
CSC country code: USA
CSC sales code: TMB
Phone SN:
IMEI:
HW version: REV0.7
RF cal date: 20180223
Chip name: EXYNOS7870
Modem board: SHANNON315
Security patch: 2018-12-01
Boot Warranty bit: 0
SIM State: ABSENT
Initialization zTool... OK
Running zTool, please wait... OK
Reading data from phone... OK
Searching server... OK
Checking server answer... OK
Executing... error (4 1)
Reboot phone and try again.
Check ADB drivers, USB cable. Don't use USB Hubs
If this repeated then reflash phone and make factory reset.
Done with Samsung Tool PRO v.34.8