Tool R4.0.0001 __hot__ | Spd Upgrade

Navigate to the extracted folder. Locate the file named UpgradeDownload.exe . Right-click on it and select Run as Administrator . Step 4: Load the Firmware File

a specialized software utility used to flash or upgrade the firmware of mobile devices equipped with Spreadtrum (SPD) or Unisoc CPUs Key Details and Functions Firmware Management spd upgrade tool r4.0.0001