Remove FRP Nexus 6 - Can't enable ADB / Factory Mode

On 7.1.1 latest July patch for moto xt1103

GC Pro prompts to enter factory mode but when I select it the screen just flashes and fastboot stays normal.

Using Version...1.0.0.0055
Selected Model Lenovo S820
Selected Task Motorola Enable ADB
Fail to found Motorola Network interface..