Y91c Flashing Tutorial

Downgrade Method "with PC"
For Vivo Y91c or Vivo 1820 "Only"
(Tested on 2/32 Variant)

DO IT AT YOUR OWN RISK. IM JUST SHARING THE METHOD AND DON'T BLAME ME IF YOUR DEVICE IS GOING FAIL OR BOOTLOOP.

Download Files Here: Vivo_Y91C_PD1818HF_MT6765_EX_A_1.9.13_09072019.zip

Disable windows defender or any antivirus software para di macorrupt ang files.
You can choose any version you want but I recommend this version (Stable).

"See the Photo Below."

Guide:

Computer:

-Open SP Flash Tools (Download Only)
-Put the Download-Agent - filename on flashtool folder "(MTK_AllInOne_DA_VIVO.bin)"
-Also the same for Authentication-File -filename on flashtool folder "(Vivo.auth)"
-Scatter-loading File on firmware folder "(MT6765_Android_scatter.txt)"
-Uncheck "preloader"
-Press Download

Phone

-Turn off phone
-Press vol up and down and plug to pc
-Wait for it
-After its done, format the phone in recovery mode to remove excess files from flash tool (Optional, but you can manually delete it on file manager in your root folder)