Download Vivo Y21 PD2139F FRP File: PD2139F_Remove+Screen+Lock MTK Auth Bypass tool SP Flash tool How to remove FRP in Vivo Y21 PD2139F: Install MTK Driver. 1- Download the package & Extract SP Flash tool. 2- Out of the icon appearing, Double click on Flash_tool.exe 3- it will launch the tool on your PC, Click on...