There are times when the Google Account Pattern and PIN or FRP bypass process on an Android doesn't run smoothly as usual. Even though for Android and the tools used are the same as before, I myself often experience events like this, for example, Vivo Y12, which is usually very easy to bypass with the MRT Key application, sometimes does not work and must use alternative applications such as Miracle and SPFlash Tool. 
The following is a Tutorial Guide How to solve Android VIVO Y12 Pattern locked and FRP Google Account problems using the SPFlash Tool. For materials and tools download HERE
1. RUN THE SPFLASHTOOL VERSION 5
2. CHOOSE DOWNLOAD AGENT FROM DOWNLOAD AGENT COLUMN SELECT Y12_alltutorial.bin
3. CHOOSE TO SCATTER FILE FROM SCATTER COLUMN ON SPFLASHTOOL
4. CHOOSE FROM AUTHENTICATION FILE SELECT COLUMN alltutorial.auth
4. CLICK MENU FORMAT ON SPFLASHTOOL
5. SELECT THE FLASH FORMAT MANUAL MENU
the next step
ENTER THE FOLLOWING CODE TO RESET THE PATTERN:
1. ON COLUMN BEGIN ADDRESS [HEX]: 0x17f800000
2. ON COLUMN FORMAT LENGTH [HEX]: 0x100000000
AFTER COMPLETE, STAY UNLOCK THE USB CABLE THEN TURN ON THE PHONE.
IF LOCKED WITH FRP, DO THE SAME WAY, JUST DIFFERENT HIS ADDRESS FORMAT
ENTER THE FOLLOWING CODE FOR FRP BYPASS:
1. ON COLUMN BEGIN ADDRESS [HEX]: 0x5588000
2. ON COLUMN FORMAT LENGTH [HEX]: 0x100000
This is the Tutorial Guide on the Easy Way to ByPass Pattern or PIN and FRP Google Account Vivo Y12 with the SPFlash Tool Application that you can try to practice.