walton Primo F8 frp remove done with Selected model: MTK CUSTOM or da file 
Platform: __GENERAL RESET FRP METHODS
Selected model: MTK CUSTOM
Selected Download Agent: C:\Users\pintu das\Desktop\MTK_AllInOne_DA_SP.bin
Please, power phone OFF (press and hold "Vol+" or "Vol-" button) and connect USB cable.
Searching for a phone. Please wait...
Found phone on COM97
Detecting Chip Version...
HW Chip: MT6580: 6580.0000
HW Version: 8A00.CA00.0000.0000
Connecting...
Brom Version: FF
BootLoader Version: 01
Searching Download Agent...
Selected DA: MTK_AllInOne_DA_v3.3001.00.00, n.14
Sending Download Agent...
DA sent successfully
Initializing DA...
Synchronizing with DA...
NAND Flash: not installed
eMMC Flash: .90014A48.38473461.32A44A20.48361479
eMMC Flash: Hynix: H8G4a2
DA ver: 4.2.9C
Initializing Memory Flash..
Initialization successfully completed
Sending loaders...
Loader send successfuly.
Reading Flash Info...
EMMC rpmb size: 4 Mb
EMMC boot1 size: 4 Mb
EMMC boot2 size: 4 Mb
EMMC gp1 size: 0 Mb
EMMC gp2 size: 0 Mb
EMMC gp3 size: 0 Mb
EMMC gp4 size: 0 Mb
EMMC user area size: 7456 Mb
Internal RAM size: 128 Kb
External RAM size: 1024 Mb
Reading partition...
Reading info...
Brand: WALTON
Model: Primo F8
Device: Primo_F8
Platform: mt6580
Android version: 7.0
Display ID: Primo_F8_S03_12292017
Searching for signatures...
Resetting FRP lock..
FRP lock is successfully reseted!
Backup saved as WALTON_Primo F8_11-02-2019_12-23-23.dump file
Performed by 1.6.2.0 Software version.
Thanks Octopus team