VIVO S1 1907 REMOVE SCREENLOCK DONE BY UAT MTK
1. Power off device
2. Remove Install battery if needed
3. Connect USB cable to powered off device
4. For New sec. Press and Hold Both Volume keys for Brom Mode
5. For Old sec. Press and Hold Volume UP for Brom Mode
6. Do not press any Key for PreLoader Mode
7. Install drivers if needed
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Connection : Meta Mode
Process : Format | Factory Reset
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Searching for device...
Device found
MediaTek PreLoader USB VCOM (Android) (COM11)
Port : COM11
Mode : PreLoader
Instance : USB\VID_0E8D&PID_2000\5&82D83E3&0&8
Rebooting device into Meta Mode... DONE
Searching for device...
MediaTek USB VCOM (Android) (COM18)
Port : COM18
Connecting device into META mode... DONE
Mode : PreLoader Port
Instance : USB\VID_0E8D&PID_2007\5&82D83E3&0&8
Getting Device Hardware Information ... DONE
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SW VER : MOLY.LR12A.R3.MP.V136.6.P25
HW VER : BBK_R0MP1_K68V1_64_BSP_HW
BB CHIP : MT6768
====================================
Reading system Information...
Model : vivo 1907_19
Android Ver. : 11
Android OS : Android 10 Q
Manufacturer : vivo
Platform : mt6768
CPU : arm64-v8a
Security Patch : 2021-03-01
Display id : RP1A.200720.012 release-keys
Build Date : RP1A.200720.012
Formatting device... DONE
All successfully done