(Password-Pattern-PIN) 

VIVO 1820 Password Unlock-FRP Unlock Tool

* Brand=VIVO

* Model: VIVO 1820 Y91c PD1818HF MT6762R

(META)

Factory Reset (1) (GENERIC) ===== DONE

===BOOT Key: -

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(FRP)

VIVO 1820 Password Unlock-FRP Unlock Tool

* Brand=VIVO

* Model: VIVO 1820 Y91c PD1818HF MT6762R

(BROM EDL)

(PRELOADER) ERASE FRP === DONE

===BOOT Key: -