LG V10 VS990 FRP error

I’m getting this error when I try to remove frp from VS990"

Checking data…OK
Platform: LG Qualcomm
Selected port: COM19
Selected model: VS990
Please, put the phone into download mode manually (Power phone OFF, press and hold "Vol+" button and connect the cable (or P990 cable)).
Reading info…
Model ID: VS990
IMEI: 353149-07-329786-1
Android version: 6.0
Battery level: 43%
SW Version: VS99022A
Mode: Normal
Switching to Download mode…OK
Initializing flash…OK
Reading partitions…OK
Resetting FRP Lock…
Step 1…Failed!
Error code: DCASVASCSD
Performed by 2.4.2 software version.