Checking fastboot device.....OK
Reading info.....OK
Device Model: STK-L21
Device Firmware: :STK-L21MDV 10.0.0.366(C185E6R2P1)
Base Firmware: :STK-LGRP3-OVS 10.0.0.366
Custom Firmware: :STK-L21MDV-CUST 10.0.0.6(C185)
Preload Firmware: :STK-L21MDV-PRELOAD 10.0.0.1(C185R2)
Device FB Lock: LOCKED
Device USER Lock: LOCKED
Device Lock: locked
Operation {Read info} ID: 6C3780925F38E434
Elapsed time 00:00 -- Version 3.9.3
downloaded firmware from here
https://easy-firmware.com/index.php?...file&id=260115
STK-L21MDV 10.0.0(C185) Downgrade For FRP Bypass By EFT Pro (AOD)