J727T1 b3 unlock online fail

Chimera Mobile Phone Utility version: 18.34.1358 @ 2018-08-18

[Unlock phone started]

Gathering phone info...
Collecting information. Be patient! Do NOT disconnect the phone!
Model: SM-J727T1
Sales Code: TMK
Country Code: USA
Timezone: Africa/Lagos
Android Version: 7.0 [NRD90M] [SDK 24]
Build Date: Tue May 8 16:49:43 KST 2018
PDA Version: J727T1UVS3ARE1 [may 2018, rev1]
Phone Version: J727T1UVS3ARE1 [may 2018, rev1]
CSC Version: J727T1TMK3ARE1 [may 2018, rev1]
Product Code: TMK
HIDSw Version: J727T1UVS3ARE1/J727T1TMK3ARE1/J727T1UVS3ARE1/J727T1UVS3ARE1
Board Platform: EXYNOS5
Modem Platform: SHANNON315
Serial Number: R28K50GSYVW
Imei: 357847090745111
Unique Number: C000062C36DF635
Connections: AT,MTP
Battery Status: 3.82V (19%)
Network Type: GSM
SIM Status: ABSENT
Multisim Config: SS
Knox Version: v30
Warranty Bit: 0
Security Patch: 2018-05-01
Data Encryption State: encrypted

Reading data...
Searching serial port. Be patient! Do NOT disconnect the phone!
Serial port found on COM213
Reading data. Be patient! Do NOT disconnect the phone!
Inappropriate modem version.
Try using an older modem. WARNING! You only have to flash the modem.bin from the firmware!
Data read failed.
Finished at local time: [08.18.18 10:37:42]
WorkID: 42636136


solution needed