flash lg stopped FAILED

i have problem flash all serie lg by this version
flash stop 40% or 50%
i have tested many lg ad pc
same pc anhoter box done
please help

Checking data…OK
Platform: LG Qualcomm
Selected port: COM45
Selected model: D290N
Reading info…
Mode: Emergency
Initializing flash…OK
SW version: LGD290nAT-00-V10c-214-07-FEB-18-2015+0
LAF Version: 1.0
Product ID: CD22S150128004703
IMEI: 355405-06-340374-7
Target operator: GLOBAL
Hardware: rev_10
Opening "D290n10d_00.oct"…OK
Setting options…OK
Reading partitions…OK
Formating USERDATA…OK
Writing PrimaryGPT…OK
Writing modem…OK
Writing sbl1…OK
Writing rpm…OK
Writing tz…OK
Writing sdi…OK
Writing aboot…OK
Writing rpmb…OK
Writing tzb…OK
Writing abootb…OK
Writing persist…OK
Writing laf…OK
Writing boot…OK
Writing recovery…OK
Writing factory…OK
Writing sbl1b…OK
Writing cust…OK
Writing system…Failed!
Performed by 2.3.4 software version.
——————————————————————————–
Checking data…OK
Platform: LG Qualcomm
Selected port: COM1
Selected model: D290N
Reading info…
Could not detect mode!
Performed by 2.3.4 software version.
——————————————————————————–
Checking data…OK
Platform: LG Qualcomm
Selected port: COM1
Selected model: D290N
Reading info…
Could not detect mode!
Performed by 2.3.4 software version.
——————————————————————————–
Checking data…OK
Platform: LG Qualcomm
Selected port: COM45
Selected model: D290N
Reading info…
Mode: Emergency
Initializing flash…OK
SW version: LGD290nAT-00-V10c-214-07-FEB-18-2015+0
LAF Version: 1.0
Product ID: CD22S150128004703
IMEI: 355405-06-340374-7
Target operator: GLOBAL
Hardware: rev_10
Opening "D290n10d_00.oct"…OK
Setting options…OK
Reading partitions…OK
Formating USERDATA…OK
Writing PrimaryGPT…OK
Writing modem…OK
Writing sbl1…OK
Writing rpm…OK
Writing tz…OK
Writing sdi…OK
Writing aboot…OK
Writing rpmb…OK
Writing tzb…OK
Writing abootb…OK
Writing persist…OK
Writing laf…OK
Writing boot…OK
Writing recovery…OK
Writing factory…OK
Writing sbl1b…OK
Writing cust…OK
Writing system…Failed!
Performed by 2.3.4 software version.
:confused: