DOOGEE MIX Reset FRP problem [Answered]

Platform: DOOGEE
Selected model: MIX
Please, power phone OFF and connect USB cable.
Searching for a phone. Please wait...
Found phone on COM4
Detecting Chip Version...
HW Chip: MT6757: 0551.0000
HW Version: 8A00.CB00.0001.0000
Connecting...
Brom Version: FF
BootLoader Version: 02
Searching Download Agent...
Selected DA: MTK_AllInOne_DA_v3.3001.2018-04-25.11:32_437806, n.17
Sending Download Agent...
Operation was failed!
Performed by 1.4.3.1 Software version.