SM-G965F patch cert done but imei status NG

SM-G965F patch cert done but after 4 seconds again show imei status NG

after patch cert imei status ok only for 4 5 seconds but again shows imei status ng what to do

Waiting ADB device... OK
Reading phone info...
Model: SM-G965F
Android version: 9
PDA version: G965FXXS4CSDH
CSC version: G965FOXM4CSDH
Phone version: G965FXXS4CSDH
Product code: SM-G965FZKGPAK
CSC country code: PAKISTAN
CSC sales code: PAK
Phone SN:
IMEI:
HW version: MP 0.900
RF cal date: 20180922
Chip name: EXYNOS9810
Modem board: SHANNON360
Security patch: 2019-05-01
Boot Warranty bit: 1
SIM State: ABSENT,ABSENT
Checking Super user right... true
Initialization zTool... OK
Running zTool, please wait... OK
Reading data from phone... OK
Searching server... OK
Checking server answer... OK
Executing... OK
Searching server... OK
Waiting for server answer... OK
Patching... OK
Rebooting phone... OK

Done with Samsung Tool PRO v.37.0