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TheMasterArchiver
Spreadtrum/UNISOC firmware (.pac) flashing
This guide requires Microsoft Windows to follow
This procedure will wipe all data on the device
This guide requires disassembling the device
This guide is based on
this guide
on 4pda
Instructions
Download the device's stock ROM
Download the
SPD Flash Tool with drivers
and unpack them
Install the drivers
Open SPD Flash Tool:
ResearchDownload.exe
Press on the gear icon on the top left
Select the
.pac
file
Press on the triangle icon
Plug in the device while holding both volume buttons
Hold the buttons until the process is finished