Help Baseband and imei null G925F

hello i have G925F Baseband and imei null after flash with this firmware G925FXXU6ERF5_G925FFTM6ERF1_FTM 7.0. now the phone is B6 k2 S2
i tried many methodes for repair it no solution at the moments please help me if any one have the best ways to repair it
this is the first info of the phone before flashed
[ 19/08/2018 19:25:39 ] Android version: 6.0.1
[ 19/08/2018 19:25:40 ] PDA version: G925FXXS5DQD4 AP
[ 19/08/2018 19:25:40 ] CSC version: G925FFTM5DQA1
[ 19/08/2018 19:25:40 ] Phone version: G925FXXU5DQA2 CP
[ 19/08/2018 19:25:40 ] Product code:
[ 19/08/2018 19:25:41 ] CSC country code: France
[ 19/08/2018 19:25:41 ] CSC sales code: FTM
[ 19/08/2018 19:25:41 ] Phone SN: R58G91Y2CJP
[ 19/08/2018 19:25:41 ] IMEI: 350000000000006
[ 19/08/2018 19:25:42 ] HW version:
[ 19/08/2018 19:25:42 ] RF cal date:
[ 19/08/2018 19:25:42 ] Chip name: EXYNOS7420
[ 19/08/2018 19:25:42 ] Modem board: SHANNON333
[ 19/08/2018 19:25:42 ] Security patch: 2017-04-01
[ 19/08/2018 19:25:43 ] Boot Warranty bit: 1
[ 19/08/2018 19:25:43 ] Checking Super user right... true
[ 19/08/2018 19:25:45 ] Reading NV data... OK
[ 19/08/2018 19:25:46 ] Checking NV data... error

THANKS IN ADVANCE