Follow the bellow instructions step by step to successfully flash .pac Stock Rom to your Android Smartphones via Spreadtrum Upgrade Tools.
NOTE: Ensure your device battery is upto %60 to avoid unexpected shutdown from your smartphone
HOW TO FLASH .PAC STOCK ROMS ON ANDROID PHONES
Step 1 : Download and Install Spreadtrum USB Driver on your Computer. If in case Spreadtrum Driver is already installed on your computer then SKIP this Step.
Step 2 : Download Stock Rom (.pac) for your Android Device.
Step 3 : Download and extract Spreadtrum Upgrade Tool on your computer or pc. After extraction, you should be seeing the following files:
Step 4 : Now, open UpgradeDownload.exe.
Step 5 : Once Spreadtrum Upgrade Tool is launched, connect your Android device to the computer (make sure your device is switched off).
Step 6 : Once your Smartphone is connected successfully to the computer, click on the ”Load Packed” Button and add the .pac file (stock rom which comes as .pac).
Step 7 : Once you have successfully added the .Pac file in Spreadtrum Upgrade Tool, click on the ”Start Downloading” button to begin the flashing.
Step 8 : During the flashing process your device will restart automatically. Once flashing is completed, you will be able to see the Green Passed Message in Spreadtrum Upgrade Tool.
Step 9 : Now you have successfully flashed your Android Device using Spreadtrum Upgrade Tool. Once your Android Device is successfully restarted, Go to Settings > About Phone > Check firmware.