Guide flash rom android smartphone with FactoryDownload/UpgradeDownload/ResearchDownload

1 Unpack ROM and extract file .pac

2 Run UpgradeDownload or FactoryDownload or ResearchDownload, connect your android device to the computer

3 Click on “Load packet” and add the .pac

4 Click on “Start” 5 During the flashing your mobile will restart automatically 6 Finish