FRP ladder

probing...

Diagnostics

...

Step 1 - oracle (tap these first)

tel: and mailto: use the same OS handoff path as intent:. If they open, intent: will work.

Step 2 - intents (primary)

Step 3 - backup doors

Step 4 - payload runner

Step 5 - after Settings opens

About phone -> Build number x7 -> Developer options
  [x] USB debugging
  [x] OEM unlocking

PC:  adb shell
     settings put global device_provisioned 1
     settings put secure user_setup_complete 1
     reboot

No PC: Passwords & accounts -> Add account -> Google
       Apps -> Google Play services -> Clear all data -> reboot