Z3x Team my J327T1 Relocked

Hi team
i unlocked one J327T1

Quote:

UNLOCK INSTRUCTIONS: 1. Power on the phone. 2. Tap 7 times on 'Build number' in 'Settings'-'About phone' to enable 'Developer options', go to 'Settings'-'Developer options' and enable 'USB debugging'. 3. Type *#0808# and select 'DM + MODEM + ADB' (or 'DM + ACM + ADB'). 4. Connect the phone to PC with USB cable, install drivers if needed. 5. Select device in ADB settings. 6. Press 'Unlock TMB via Server' button for direct unlock, write your login and password in window if it will appear. (Login and password will be saved as default after first input and can be changed in settings) Operation: Unlock Selected model: SM-J327T1 Software version: 35.2 Checking Login and Password... OK Ballance: 50 crd. You have 50 credit(s) left. This operation takes 5 credits.Continue? Yes Waiting ADB device... OK Reading phone info... Model: SM-J327T1 Android version: 7.0 PDA version: J327T1UVS2ARC1 CSC version: J327T1TMK2ARC1 Phone version: J327T1UVS2ARC1 Product code: SM2J327TZKATMK CSC country code: USA CSC sales code: TMK Phone SN: RV8J80ML6ZA IMEI: 352001090608441 HW version: REV0.1 RF cal date: 20170810 Chip name: EXYNOS7570 Modem board: SHANNON305 Security patch: 2018-03-01 Boot Warranty bit: 0 SIM State: SIM_SERVICE_PROVIDER_LOCKED Searching Samsung modem... detected COM174 Reading phone info... Model: SM-J327T1 AP version: J327T1UVS2ARC1 CSC version: J327T1TMK2ARC1 CP version: J327T1UVS2ARC1 Product code: TMK Phone SN: RV8J80ML6ZA IMEI: 35200109060xxxx Unique number: CQ3006B04AA3E54 Checking data... OK Searching server... OK Waiting for server answer... OK Waiting ADB device... OK Waiting for device to become ready... OK Initialization zTool... OK Running zTool, please wait... OK Reading data from phone... OK Rebooting phone... OK Unlock done Done with Samsung Tool PRO v.35.2

after few days customer wanted to change its firmware. and he updated its software to J327T
now its locked again.


Why is that?
and how can i solve it?


BR