SPD Upgrade Tool, SPD Upgrade Tool and SPD_Research_Tool

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 SPD Upgrade Tool_R25.20
SPD_Factory_Tool_R24.0.0003
SPD_Research_Tool_R4.0.0001

SPD Upgrade Tool, also known as SPD Flash Tool, is a Windows application used for flashing or installing .pac firmware (ROM) on devices powered by Spreadtrum/UniSoc chipsets. It offers various features that facilitate the firmware flashing process, including:

1. Flashing Stock Firmware: SPD Upgrade Tool allows you to flash the stock firmware on Android smartphones and feature phones that are based on Spreadtrum/UniSoc chipsets. This is useful for fixing software issues, restoring the device to its original factory state, or updating to a newer version of the firmware

2. Upgrade and Downgrade Firmware: With SPD Upgrade Tool, you can upgrade or downgrade the firmware on your Spreadtrum/UniSoc device. This feature is helpful if you want to switch to a different firmware version for compatibility reasons or to access specific features 

3. PAC File Support: The tool supports the .pac file format, which is the firmware package used for flashing Spreadtrum/UniSoc devices. It allows you to load and flash the firmware by selecting the appropriate .pac file

4. Backup and Restore NV RAM: SPD Upgrade Tool allows you to backup and restore the Non-Volatile Memory (NV RAM) on your device. NV RAM contains important settings, such as IMEI numbers, WiFi addresses, and calibration data. This feature helps you safeguard and restore these critical device settings.

5. Read and Write Parameters: You can use the SPD Upgrade Tool to read and write various device parameters like IMEI, WiFi, Bluetooth, and SIM lock. This feature enables you to modify or repair device-specific information as needed 

6. Format and Reset: The tool also provides options for formatting and resetting the device. You can perform a factory reset or erase specific partitions on your Spreadtrum/UniSoc device