J600g repair rebuiled failed
 

Waiting ADB device... OK
Reading phone info...
Model: SM-J600G
Android version: 9
PDA version: J600GDXU4BSF2
CSC version: J600GODM4BSF2
Phone version: J600GDXU4BSF2
Product code: SM-J600GZBHINS
CSC country code: India
CSC sales code: INS
Phone SN: RZ8K60SJWNE
IMEI: 357110093267264
HW version: REV0.3A
RF cal date: 20180608
Chip name: EXYNOS7870
Modem board: SHANNON315
Security patch: 2019-06-01
Boot Warranty bit: 0
SIM State: ABSENT,ABSENT
Initialization zTool... OK
Running zTool, please wait... OK
Reading data from phone... OK
Searching server... OK
Checking server answer... modem not supported
Searching server... OK
Checking available files... not found compatible file
Try downgrade modem if possible

Done with Samsung Tool PRO v.37.0