SPD Flash Tool

Here is the Official Flash Tool For Spreadtrum (SPD) Smart Phone, (Android)

You can update the software of your phone very easily and that too at home
You just have to follow some rules
For example
Charge your phone’s battery 50%
Use a good USB cable
Use the Rear USB Slot of your computer

Ok now we will know how you will update your mobile

First Install Samsung USB Driver 
Click Double Click And Setup Driver

Open SPD Tool Folder Click “ResearchDownload”
Click “Load Packet” and choss “Pac” File And Wait…
Click the “Play button”
And Connect USB Cable With pressing volume down key
And wait for the Pass

Here is Tool Link

SPD_Upgrade_Tool_R4.0.0001:Get Link

SPD_Factory_Tool_R21.0.0001 :Get Link

SPD_Research_Tool_R21.0.0001 :Get Link

SPD_Upgrade_Tool_R21.0.0001:Get Link

FACTORYDOWNLOAD_R19.17.4301_P1: Get Link

SPD Upgrade Tool R23.0.0001: Get Link

SPD_Upgrade_Tool_R25.20.3901: Get Link

SPD_Research_Tool_R24.0.0003: Get Link