lg vs500 frp lock not reset

Welcome to Octoplus/Octopus Box LG Software version 2.8.6
--------------------------------------------------------------------------------
Checking data...OK
Platform: LG Qualcomm
Selected port: COM172
Selected model: VS500
Please, put the phone into download mode manually (Power phone OFF
(reconnect battery), press and hold "Vol+" button and connect the cable
(or P999 cable)).
Reading info...
Model ID: VS500
IMEI: 357263-07-105258-6
Android version: 7.0
Battery level: 83%
SW Version: VS50020g
Mode: Emergency
Initializing flash...OK
SW version: VS50020g_01
Android version: 7.0
LAF Version: 1.1
Product ID: CT64S160804002295
IMEI: 357263-07-105258-6
Target operator: VZW
Hardware: rev_10
Reading partitions...OK
Detecting writing method...
LAF Error: 80000121.
Trying second method...
Trying third method...OK
Resetting FRP Lock...Failed!
Reset FRP operation for VS500 will delete all user data on the phone
(contacts, pictures and others)!
Do You want to continue?
Reading partitions...OK
Detecting writing method...
Trying third method...OK
Resetting FRP Lock...
Writing loader...
Step 1...
Step 2...
Step 3...
Step 6...
Step 7...
Step 8...
Step 9...
Step 10...OK
Writing userdata...Failed!
Hello, I am LAF. Nice to meet you.

Restoring loader...OK
Reset FRP operation for VS500 will delete all user data on the phone
(contacts, pictures and others)!
Do You want to continue?
Reading partitions...OK
Detecting writing method...
Trying third method...OK
Resetting FRP Lock...
Performed by 2.8.6 Software version.