How To Flash Pac Stock Rom On Factory / Research / Upgrade Download

Today we are going to learn how to flash Pac Stock Rom on any android using Research Download or Spreadtrum Upgrade Tool.This tool are working on only for Spredtrum (SPD) CPU. This tool are perfectly work with Windows XP, Windows 7, Windows 8, Windows 8.1 and Windows 10.
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Updated
May 13, 2021
Requirements
Windows 10/7/8/8.1 and XP

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Description

This is a step-by-step tutorial on how to use Research / Upgrade / Factory Download Tool to flash a Spreadtrum Android phone’s .pac file, firmware or stock rom. Its about the same procedure for the three tools

Requirements:
1.Download Research / Upgrade / Factory Download tool
2.PC
3.USB cord
4.Spreadtrum phone
5.Install Spreadtrum SCiU2S USB drivers

Download and extract Research Downloader or Spreadtrum Upgrade Tool on your computer. Inside the folder, you will be following files as shown bellow picture.

Download and extract Factory / Research / Upgrade Downloader or Spreadtrum Upgrade Tool on your computer. Inside the folder, you will be following files as shown bellow picture.
Now, open only ResearchDownload.exe. as red arrow indicated.

Once Research Download or Spreadtrum Upgrade Tool properly launched.

Now Click on the Load Packed Button and add the Pac file inside your firmware or Rom folder that you have downloaded before.

Once you have successfully added the Pac file in Spreadtrum Upgrade Tool, click on the Start Downloading button as mentioned.

Now connect your device to the computer during switch off. Now your tool begin the flashing.During the flashing process do not disconnect USB cable.

Once flashing is completed, you will be able to see the Passed Message in Research tool or Spreadtrum Upgrade Tool.

Now you have successfully flashed your Mobile Device using Research Download Tool. If you have any difficulty during flashing please leave your valuable comment.

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