SPD UPGRADE TOOL is a computer application which can be use to flash,Update pac file to spreadtrum phone (SPD base), in order to unbrick phone.
To use SPD UPGRADE TOOL follow below instruction:
1. Download SPD UPGRADE TOOL
2.DOWNLOAD WINRAR
DOWNLOAD FIRMWARE HERE
3.Extract it to your desire folder e.g desktop using WINRAR .
4.Open the folder and double click Research Download
After it open click setting icon to select pac file
Then click play icon and hold volume up and down togrther in your phone and attach your usb to the phone.
After finish you see green passed text after question mark icon.
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